No problem, we've got 9422 and 2172 to multiply
9422 × 2172 = 2172 × (9422)
+ 2172 × 2 what gives us 4344
+ 2172 × 20 giving us 43440
+ 2172 × 400 resulting in 868800
+ 2172 × 9000 that results in 19548000

= 20464584
