Alright, let's work through 1999 times 9810 step by step
1999 × 9810 = 9810 × (1999)
+ 9810 × 9 which equals 88290
+ 9810 × 90 that equals 882900
+ 9810 × 900 that results in 8829000
+ 9810 × 1000 that is equal 9810000

= 19610190
