Alright, let's work through 2973 times 3997 step by step
2973 × 3997 = 3997 × (2973)
+ 3997 × 3 that equals 11991
+ 3997 × 70 that results in 279790
+ 3997 × 900 that results in 3597300
+ 3997 × 2000 giving us 7994000

= 11883081
