We're going to solve 9404 multiplied by 8420
9404 × 8420 = 8420 × (9404)
+ 8420 × 4 what gives us 33680
+ 8420 × 00 what gives us 0
+ 8420 × 400 yielding 3368000
+ 8420 × 9000 resulting in 75780000

= 79181680
