Alright, let's work through 4920 times 845 step by step
4920 × 845 = 845 × (4920)
+ 845 × 0 yielding 0
+ 845 × 20 what gives us 16900
+ 845 × 900 which equals 760500
+ 845 × 4000 that equals 3380000

= 4157400
