Alright, let's work through 9983 times 8126 step by step
9983 × 8126 = 8126 × (9983)
+ 8126 × 3 that equals 24378
+ 8126 × 80 that equals 650080
+ 8126 × 900 yielding 7313400
+ 8126 × 9000 that equals 73134000

= 81121858
