Alright, let's work through 1638 times 1329 step by step
1638 × 1329 = 1329 × (1638)
+ 1329 × 8 that results in 10632
+ 1329 × 30 which equals 39870
+ 1329 × 600 resulting in 797400
+ 1329 × 1000 which equals 1329000

= 2176902
