Alright, let's work through 3931 times 8129 step by step
3931 × 8129 = 8129 × (3931)
+ 8129 × 1 which equals 8129
+ 8129 × 30 giving us 243870
+ 8129 × 900 which equals 7316100
+ 8129 × 3000 that results in 24387000

= 31955099
