Alright, let's work through 9991 times 6924 step by step
9991 × 6924 = 6924 × (9991)
+ 6924 × 1 producing 6924
+ 6924 × 90 producing 623160
+ 6924 × 900 what gives us 6231600
+ 6924 × 9000 producing 62316000

= 69177684
