Alright, let's work through 3951 times 1172 step by step
3951 × 1172 = 1172 × (3951)
+ 1172 × 1 producing 1172
+ 1172 × 50 that is equal 58600
+ 1172 × 900 that equals 1054800
+ 1172 × 3000 that is equal 3516000

= 4630572
