Alright, let's work through 3331 times 4991 step by step
3331 × 4991 = 4991 × (3331)
+ 4991 × 1 that equals 4991
+ 4991 × 30 that equals 149730
+ 4991 × 300 what gives us 1497300
+ 4991 × 3000 yielding 14973000

= 16625021
