Alright, let's work through 3924 times 8260 step by step
3924 × 8260 = 8260 × (3924)
+ 8260 × 4 what gives us 33040
+ 8260 × 20 producing 165200
+ 8260 × 900 that results in 7434000
+ 8260 × 3000 resulting in 24780000

= 32412240
