No problem, we've got 3900 and 4603 to multiply
3900 × 4603 = 4603 × (3900)
+ 4603 × 0 resulting in 0
+ 4603 × 00 giving us 0
+ 4603 × 900 giving us 4142700
+ 4603 × 3000 giving us 13809000

= 17951700
