We're going to solve 6643 multiplied by 9720
6643 × 9720 = 9720 × (6643)
+ 9720 × 3 which equals 29160
+ 9720 × 40 that is equal 388800
+ 9720 × 600 that results in 5832000
+ 9720 × 6000 that is equal 58320000

= 64569960
