Alright, let's work through 1685 times 8736 step by step
1685 × 8736 = 8736 × (1685)
+ 8736 × 5 yielding 43680
+ 8736 × 80 what gives us 698880
+ 8736 × 600 yielding 5241600
+ 8736 × 1000 giving us 8736000

= 14720160
