We're going to solve 9145 multiplied by 8639
9145 × 8639 = 8639 × (9145)
+ 8639 × 5 which equals 43195
+ 8639 × 40 producing 345560
+ 8639 × 100 that results in 863900
+ 8639 × 9000 producing 77751000

= 79003655
