Alright, let's work through 7855 times 1273 step by step
7855 × 1273 = 1273 × (7855)
+ 1273 × 5 what gives us 6365
+ 1273 × 50 that equals 63650
+ 1273 × 800 giving us 1018400
+ 1273 × 7000 yielding 8911000

= 9999415
