No problem, we've got 4580 and 1155 to multiply
4580 × 1155 = 1155 × (4580)
+ 1155 × 0 resulting in 0
+ 1155 × 80 that results in 92400
+ 1155 × 500 resulting in 577500
+ 1155 × 4000 that is equal 4620000

= 5289900
