Alright, let's work through 8830 times 9457 step by step
8830 × 9457 = 9457 × (8830)
+ 9457 × 0 that equals 0
+ 9457 × 30 producing 283710
+ 9457 × 800 that equals 7565600
+ 9457 × 8000 that equals 75656000

= 83505310
