Alright, let's work through 3803 times 3431 step by step
3803 × 3431 = 3431 × (3803)
+ 3431 × 3 producing 10293
+ 3431 × 00 which equals 0
+ 3431 × 800 what gives us 2744800
+ 3431 × 3000 that is equal 10293000

= 13048093
