No problem, we've got 4032 and 5379 to multiply
4032 × 5379 = 5379 × (4032)
+ 5379 × 2 what gives us 10758
+ 5379 × 30 giving us 161370
+ 5379 × 000 producing 0
+ 5379 × 4000 producing 21516000

= 21688128
