We're going to solve 6415 multiplied by 6809
6415 × 6809 = 6809 × (6415)
+ 6809 × 5 that results in 34045
+ 6809 × 10 yielding 68090
+ 6809 × 400 that is equal 2723600
+ 6809 × 6000 that is equal 40854000

= 43679735
