Alright, let's work through 2099 times 9992 step by step
2099 × 9992 = 9992 × (2099)
+ 9992 × 9 that is equal 89928
+ 9992 × 90 that is equal 899280
+ 9992 × 000 that is equal 0
+ 9992 × 2000 giving us 19984000

= 20973208
