Alright, let's work through 4240 times 2973 step by step
4240 × 2973 = 2973 × (4240)
+ 2973 × 0 that results in 0
+ 2973 × 40 yielding 118920
+ 2973 × 200 that results in 594600
+ 2973 × 4000 what gives us 11892000

= 12605520
