Alright, let's work through 3805 times 3431 step by step
3805 × 3431 = 3431 × (3805)
+ 3431 × 5 producing 17155
+ 3431 × 00 yielding 0
+ 3431 × 800 giving us 2744800
+ 3431 × 3000 resulting in 10293000

= 13054955
