Alright, let's work through 6660 times 2931 step by step
6660 × 2931 = 2931 × (6660)
+ 2931 × 0 giving us 0
+ 2931 × 60 giving us 175860
+ 2931 × 600 resulting in 1758600
+ 2931 × 6000 that results in 17586000

= 19520460
