Alright, let's work through 9846 times 8729 step by step
9846 × 8729 = 8729 × (9846)
+ 8729 × 6 resulting in 52374
+ 8729 × 40 giving us 349160
+ 8729 × 800 that equals 6983200
+ 8729 × 9000 what gives us 78561000

= 85945734
