mathmajicapp description

This is new amazing and intersting simple app that is based on math
calculation and show majic.
Download app and say your friend to chose a number greater then 15
and make some calculation after calculation
Let u select 647 now open calculator and make some calculation.
"Step 1 : Add digits like 6+4+7=17"
"Step 2 : Then do 647+17 = 664"
"Step 3 : Now again 6+6+4 = 16"
"Step 4 : Then do 664-16 = ?"

"
its answer will be three digits now click on start botton and enter
only first two digits in textbox and click ok now see the magic the last digit
will be display on screen.Play with friends
"