at this point there is no further set routine. You secretly know the number is 5 so continue your calculations as you see fit.
The above is merely an example. There is no set procedure once you arrive at 5. Just keep the calculations going as you deem fit until you arrive at the correct answer. With practice you will soon be able to mentally arrive at answers with four digits, such as 5, 942. To arrive at such an answer, you could first arrive at 500, then have that figure multiplied by 12 which gives 6000. Have 58 subtracted and you get the answer 5, 942. At a glance you should know that to subtract 50 from 6, 000 would leave 5, 950, then in your mind you visualize that 8 from 50, which forms the last two digits of the 5, 950, would give 42 or the required, 5, 942. This is merely a quick example of how you will think once you have had some experience with this effect. Most of the time, I personally use six digit figures for this trick, such as 98, 471.
STAGE PRESENTATION AND PATTER: On a table that is sitting in the middle of the stage have a large school slate, a piece of chalk, some paper and a pencil. A large blackboard, downstage and to one side, may be used in place of the school slate, if desired. Also a chair should be sitting at the table with its back toward the audience.
"Ladies and gentlemen; It is my privilege this evening to present for your consideration one of the most profound mysteries ever conceived by the human mind, NUMERICO, a test in applied psychology. This test has baffled scientists and thinkers throughout the world. Tonight, with your cooperation, I shall attempt to present this positive demonstration of mind over mind.
"Will someone be kind enough to come up here and assist me, preferably someone who likes figures? There will be some easy addition, multiplication, subtraction and division to do. Ahl Here comes a brave young man. Would you, sir, just be seated on this chair with your back to the audience. The purpose of having your back to the audience is so that you cannot see what is soon to be taking place behind your back. Later, I shall tell you what to do. (Pick up the slate and chalk and face your audience).
"Ladies and gentlemen, I am going to ask four different people in the audience to indicate with their fingers digits from one to nine. This will be done silently so that the young man sitting at the table here will not know what is going on. For instance, if you wish to signify two, hold up two fingers like this (demonstrate). If you wish me to write down the digit six, then hold up all fingers on one hand and one on the other (demonstrate again). To exclude the possibility of the use of confederates, I shall write down digits as signified by four different people. Would you, sir, indicate the first digit you would like to have me write on the slate? (Look at someone and when he holds up his fingers, write down the number indicated. ) Thank you. And you, madam, the second one (write it down). Is that correct? Thank you. What shall the third digit be sir? (Write down whatever is signified). And what would you like for the last one to be? (Write it down. ) Thank you. (Hold the slate up toward the audience where all can see the four digit number at all times. )
"Now, sir, you who are sitting at the table, would you just do a little figuring for me. Take your time and be careful to make your calculations correctly. Are you ready? Put down any number you like, preferably a small one so that the calculating will be easy. Have you written your number down? (He says, yes. ) Multiply the number by two. (You pause for a few seconds. ) Add ten to it. (Pause. ) Divide by two. (Pause. ) Subtract the number you put down the first time from what you have now. (Here he has arrived at five, so continue the calculations as you see fit until the answer on the slate is arrived at, as per the previous instructions. Address the audience, again. )
"Ladies and gentlemen, the young man seated at the table has just performed a series of calculations. At no time have I seen or been able to know any of the figures he has written. Even if by some subtle method I had been fortunate enough to have seen one of the figures, it would still have been impossible for me to have carried on such calculations in my head, unless, of course, I were a mathematical genius, which I am not. Now, if his calculations have been correct, and if our minds have been properly attuned so as to have harmonized with each others, then you shall have witnessed one of the most remarkable feats ever created by the human mind, the psychological control of human actions by mind over mind. His total (point to the person at the table helping you) should be the same as that specified on the slate IN ADVANCE by four members of the audience. (Address the person who did the figuring. At the same time look at the answer on the slate, the slate still being held so everyone can see it. ) Sir, will you please tell us what your final result is? Speak it loud and clear so everyone in the audience can hear you. (He reads off the same answer you have on the slate. As soon as he has finished, hold the slate in both hands about chest high. Push it at arms length in front of you toward the audience as you finish your patter with dramatic emphasis. ) And here you are, ladies and gentlemen. In some strange, incomprehensible manner, the seemingly impossible has been accomplished. "
Bow slightly for applause, thank the young man for assisting you, and dismiss him.
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To do this successfully you need to build a clear path of action by using tools if necessary. These tools would be facts, evidence and stories which you know they can relate to. Plus you always want to have their best interests at heart, in other words, you know what is good for them