Alright, let's work through 4090 times 2080 step by step
4090 × 2080 = 2080 × (4090)
+ 2080 × 0 which equals 0
+ 2080 × 90 that equals 187200
+ 2080 × 000 yielding 0
+ 2080 × 4000 what gives us 8320000

= 8507200
