Alright, let's work through 9873 times 8793 step by step
9873 × 8793 = 8793 × (9873)
+ 8793 × 3 that is equal 26379
+ 8793 × 70 producing 615510
+ 8793 × 800 that is equal 7034400
+ 8793 × 9000 what gives us 79137000

= 86813289
