Alright, let's work through 2790 times 415 step by step
2790 × 415 = 415 × (2790)
+ 415 × 0 producing 0
+ 415 × 90 yielding 37350
+ 415 × 700 which equals 290500
+ 415 × 2000 that results in 830000

= 1157850
