Alright, let's work through 3931 times 8472 step by step
3931 × 8472 = 8472 × (3931)
+ 8472 × 1 which equals 8472
+ 8472 × 30 yielding 254160
+ 8472 × 900 that is equal 7624800
+ 8472 × 3000 that results in 25416000

= 33303432
