No problem, we've got 9451 and 2188 to multiply
9451 × 2188 = 2188 × (9451)
+ 2188 × 1 which equals 2188
+ 2188 × 50 producing 109400
+ 2188 × 400 what gives us 875200
+ 2188 × 9000 that results in 19692000

= 20678788
