We're going to solve 2451 multiplied by 6616
2451 × 6616 = 6616 × (2451)
+ 6616 × 1 what gives us 6616
+ 6616 × 50 producing 330800
+ 6616 × 400 that equals 2646400
+ 6616 × 2000 resulting in 13232000

= 16215816
