No problem, we've got 4007 and 5382 to multiply
4007 × 5382 = 5382 × (4007)
+ 5382 × 7 that results in 37674
+ 5382 × 00 that equals 0
+ 5382 × 000 yielding 0
+ 5382 × 4000 giving us 21528000

= 21565674
