We're going to solve 8720 multiplied by 6640
8720 × 6640 = 6640 × (8720)
+ 6640 × 0 which equals 0
+ 6640 × 20 giving us 132800
+ 6640 × 700 that is equal 4648000
+ 6640 × 8000 yielding 53120000

= 57900800
