Alright, let's work through 9913 times 8142 step by step
9913 × 8142 = 8142 × (9913)
+ 8142 × 3 giving us 24426
+ 8142 × 10 producing 81420
+ 8142 × 900 resulting in 7327800
+ 8142 × 9000 giving us 73278000

= 80711646
