Alright, let's work through 6601 times 9920 step by step
6601 × 9920 = 9920 × (6601)
+ 9920 × 1 that equals 9920
+ 9920 × 00 producing 0
+ 9920 × 600 that equals 5952000
+ 9920 × 6000 producing 59520000

= 65481920
