No problem, we've got 3564 and 4221 to multiply
3564 × 4221 = 4221 × (3564)
+ 4221 × 4 that equals 16884
+ 4221 × 60 which equals 253260
+ 4221 × 500 what gives us 2110500
+ 4221 × 3000 resulting in 12663000

= 15043644
