No problem, we've got 8720 and 7730 to multiply
8720 × 7730 = 7730 × (8720)
+ 7730 × 0 giving us 0
+ 7730 × 20 producing 154600
+ 7730 × 700 producing 5411000
+ 7730 × 8000 which equals 61840000

= 67405600
