Alright, let's work through 8420 times 4160 step by step
8420 × 4160 = 4160 × (8420)
+ 4160 × 0 what gives us 0
+ 4160 × 20 giving us 83200
+ 4160 × 400 what gives us 1664000
+ 4160 × 8000 that is equal 33280000

= 35027200
