No problem, we've got 4546 and 7920 to multiply
4546 × 7920 = 7920 × (4546)
+ 7920 × 6 giving us 47520
+ 7920 × 40 resulting in 316800
+ 7920 × 500 that is equal 3960000
+ 7920 × 4000 that results in 31680000

= 36004320
