multiply any two digit number by 11

steps and examples:

1.enter two digit number
Ex:64

2.separate the to digit number like this
(6_4)

3.Add 6 and 4 together
6+4=10

4.put the resulting 0 in the hole

6(0)4

add the carry into previous one

(6+1)04=704

That's it.........64*11=704