We're going to solve 7664 multiplied by 3660
7664 × 3660 = 3660 × (7664)
+ 3660 × 4 producing 14640
+ 3660 × 60 yielding 219600
+ 3660 × 600 yielding 2196000
+ 3660 × 7000 that is equal 25620000

= 28050240
