the phone number +99 99 99
97 x 99 = 9603
1583.01
693
5 * 99 = 495You could break 99 up into smaller pieces, and find the answer by multiplying each of those pieces by 5:5 * 9 + 5 * 25 + 5 * 25 + 5 * 20 + 5 * 20 = 495You can do this since ab + ac = a(b...