No problem, we've got 5456 and 3891 to multiply
5456 × 3891 = 3891 × (5456)
+ 3891 × 6 giving us 23346
+ 3891 × 50 that is equal 194550
+ 3891 × 400 resulting in 1556400
+ 3891 × 5000 that results in 19455000

= 21229296
