Alright, let's work through 8356 times 9970 step by step
8356 × 9970 = 9970 × (8356)
+ 9970 × 6 producing 59820
+ 9970 × 50 producing 498500
+ 9970 × 300 giving us 2991000
+ 9970 × 8000 that is equal 79760000

= 83309320
