No problem, we've got 3639 and 6604 to multiply
3639 × 6604 = 6604 × (3639)
+ 6604 × 9 what gives us 59436
+ 6604 × 30 resulting in 198120
+ 6604 × 600 yielding 3962400
+ 6604 × 3000 that is equal 19812000

= 24031956
