No problem, we've got 5621 and 3747 to multiply
5621 × 3747 = 3747 × (5621)
+ 3747 × 1 that equals 3747
+ 3747 × 20 producing 74940
+ 3747 × 600 resulting in 2248200
+ 3747 × 5000 what gives us 18735000

= 21061887
