Alright, let's work through 4187 times 9339 step by step
4187 × 9339 = 9339 × (4187)
+ 9339 × 7 what gives us 65373
+ 9339 × 80 yielding 747120
+ 9339 × 100 what gives us 933900
+ 9339 × 4000 producing 37356000

= 39102393
