Alright, let's work through 7021 times 8637 step by step
7021 × 8637 = 8637 × (7021)
+ 8637 × 1 giving us 8637
+ 8637 × 20 that is equal 172740
+ 8637 × 000 producing 0
+ 8637 × 7000 giving us 60459000

= 60640377
