Alright, let's work through 3163 times 4407 step by step
3163 × 4407 = 4407 × (3163)
+ 4407 × 3 that is equal 13221
+ 4407 × 60 that results in 264420
+ 4407 × 100 giving us 440700
+ 4407 × 3000 that equals 13221000

= 13939341
