Alright, let's work through 8603 times 278 step by step
8603 × 278 = 278 × (8603)
+ 278 × 3 yielding 834
+ 278 × 00 which equals 0
+ 278 × 600 giving us 166800
+ 278 × 8000 yielding 2224000

= 2391634
