We're going to solve 8409 multiplied by 7940
8409 × 7940 = 7940 × (8409)
+ 7940 × 9 producing 71460
+ 7940 × 00 what gives us 0
+ 7940 × 400 that equals 3176000
+ 7940 × 8000 giving us 63520000

= 66767460
