No problem, we've got 4045 and 1155 to multiply
4045 × 1155 = 1155 × (4045)
+ 1155 × 5 that results in 5775
+ 1155 × 40 that is equal 46200
+ 1155 × 000 yielding 0
+ 1155 × 4000 giving us 4620000

= 4671975
