No problem, we've got 3821 and 7521 to multiply
3821 × 7521 = 7521 × (3821)
+ 7521 × 1 producing 7521
+ 7521 × 20 giving us 150420
+ 7521 × 800 that is equal 6016800
+ 7521 × 3000 that equals 22563000

= 28737741
