Alright, let's work through 3991 times 9373 step by step
3991 × 9373 = 9373 × (3991)
+ 9373 × 1 what gives us 9373
+ 9373 × 90 which equals 843570
+ 9373 × 900 giving us 8435700
+ 9373 × 3000 that results in 28119000

= 37407643
