Alright, let's work through 4078 times 3962 step by step
4078 × 3962 = 3962 × (4078)
+ 3962 × 8 producing 31696
+ 3962 × 70 what gives us 277340
+ 3962 × 000 yielding 0
+ 3962 × 4000 yielding 15848000

= 16157036
