Alright, let's work through 1155 times 3793 step by step
1155 × 3793 = 3793 × (1155)
+ 3793 × 5 giving us 18965
+ 3793 × 50 what gives us 189650
+ 3793 × 100 yielding 379300
+ 3793 × 1000 what gives us 3793000

= 4380915
