Alright, let's work through 9712 times 9339 step by step
9712 × 9339 = 9339 × (9712)
+ 9339 × 2 giving us 18678
+ 9339 × 10 giving us 93390
+ 9339 × 700 giving us 6537300
+ 9339 × 9000 that is equal 84051000

= 90700368
