Alright, let's work through 1155 times 2850 step by step
1155 × 2850 = 2850 × (1155)
+ 2850 × 5 yielding 14250
+ 2850 × 50 resulting in 142500
+ 2850 × 100 what gives us 285000
+ 2850 × 1000 yielding 2850000

= 3291750
