Alright, let's work through 3310 times 3956 step by step
3310 × 3956 = 3956 × (3310)
+ 3956 × 0 that equals 0
+ 3956 × 10 that equals 39560
+ 3956 × 300 yielding 1186800
+ 3956 × 3000 that equals 11868000

= 13094360
