No problem, we've got 9963 and 8720 to multiply
9963 × 8720 = 8720 × (9963)
+ 8720 × 3 that results in 26160
+ 8720 × 60 that equals 523200
+ 8720 × 900 giving us 7848000
+ 8720 × 9000 that results in 78480000

= 86877360
