Alright, let's work through 4233 times 9920 step by step
4233 × 9920 = 9920 × (4233)
+ 9920 × 3 giving us 29760
+ 9920 × 30 what gives us 297600
+ 9920 × 200 yielding 1984000
+ 9920 × 4000 what gives us 39680000

= 41991360
