No problem, we've got 3844 and 5460 to multiply
3844 × 5460 = 5460 × (3844)
+ 5460 × 4 what gives us 21840
+ 5460 × 40 producing 218400
+ 5460 × 800 yielding 4368000
+ 5460 × 3000 resulting in 16380000

= 20988240
