Magic Calculator Trick

do the Mathematical Magic trick like as the same way Tom London do in America's Got Talent

How to do the trick :
0- once you opened the calculator at first time it will ask you for 8 digits number , set what you want ( ex : 10010705 ) .
1- create this number in a paper and flip it on the table ...
2- ask your friends to give you a random 3 numbers ( ex : 53 , 87, 19 ) .
3- ask one of your friend to multiple this 3 numbers .
4- ask your friend to add a random number ( with closed eyes ) .
5- ask your friend to open his eyes to see the random number he just type .
6- finally ask him to click to equal button !
and boom , the number you store before will show in the result instead the real result ,
now show the number you wrote at the paper before to your friends !
then explicate what this number does mean .. like
guys , we got : 10010705
and this is mean
( 10 is my birth month ) .
( friend 1 : 01 is your birth month ) .
( friend 2 : 07 is your birth month ) .
( friend 3 : 05 is your birth month ) .