(For the purposes of this post, my phone # is 222-2222)

222

X 80

--------

17760

+1

--------

17761

*250

--------

4440250

So what did they do here. Really, all they did was find a fancy way to move the (222) up from the hundreds spot to the millions spot. The doubling and the addition of a single 250 was just smoke and mirrors to make the trick seem interesting. When I say added a 250 lets look at what they did. 80 X 250 = 20,000. 20,000 X 222 = 4,440,000. They could have just as easily made it 40X250=10,000 since 10,000 X 222 = 2220000 (or 222-0000), but that wouldnt have been nearly as impressive at the end. So they toss in the +1 before multiplying by 250 and that adds one more that they will subtract out at the end. They make it seem necessary but it isnt. If you take step 4 and step 8 out the end result will be the same.

After that its pretty straight forward. Since they multiplied the original number by 80 instead of 40, everything is doubled, so you have to add your last 4 digits in twice.

4440250

+ 2222

+ 2222

----------

4444694

Then you have a number that looks impressive (especially if you have a fancy 484-1249 phone number. However, if you look at it with a simple phone number you can see where the trick is. Then just remove the superfluous 250 they had us add in earlier -

4444694

-250

----------

4444444

And then take out the superfluous doubling they made us do earlier -

4444444

/ 2

----------

222-2222

and you have your phone number back.