Alright, let's work through 4190 times 312 step by step
4190 × 312 = 312 × (4190)
+ 312 × 0 yielding 0
+ 312 × 90 yielding 28080
+ 312 × 100 which equals 31200
+ 312 × 4000 what gives us 1248000

= 1307280
