No problem, we've got 4454 and 4840 to multiply
4454 × 4840 = 4840 × (4454)
+ 4840 × 4 what gives us 19360
+ 4840 × 50 resulting in 242000
+ 4840 × 400 yielding 1936000
+ 4840 × 4000 giving us 19360000

= 21557360
