We're going to solve 9621 multiplied by 1139
9621 × 1139 = 1139 × (9621)
+ 1139 × 1 that is equal 1139
+ 1139 × 20 that is equal 22780
+ 1139 × 600 yielding 683400
+ 1139 × 9000 yielding 10251000

= 10958319
