Alright, let's work through 8347 times 9978 step by step
8347 × 9978 = 9978 × (8347)
+ 9978 × 7 that results in 69846
+ 9978 × 40 that is equal 399120
+ 9978 × 300 giving us 2993400
+ 9978 × 8000 what gives us 79824000

= 83286366
