No problem, we've got 5318 and 3996 to multiply
5318 × 3996 = 3996 × (5318)
+ 3996 × 8 that is equal 31968
+ 3996 × 10 giving us 39960
+ 3996 × 300 yielding 1198800
+ 3996 × 5000 what gives us 19980000

= 21250728
