Alright, let's work through 9439 times 8820 step by step
9439 × 8820 = 8820 × (9439)
+ 8820 × 9 giving us 79380
+ 8820 × 30 that is equal 264600
+ 8820 × 400 that equals 3528000
+ 8820 × 9000 producing 79380000

= 83251980
