Alright, let's work through 3506 times 3680 step by step
3506 × 3680 = 3680 × (3506)
+ 3680 × 6 yielding 22080
+ 3680 × 00 that results in 0
+ 3680 × 500 producing 1840000
+ 3680 × 3000 what gives us 11040000

= 12902080
