Alright, let's work through 1642 times 9810 step by step
1642 × 9810 = 9810 × (1642)
+ 9810 × 2 producing 19620
+ 9810 × 40 resulting in 392400
+ 9810 × 600 that results in 5886000
+ 9810 × 1000 that results in 9810000

= 16108020
