Alright, let's work through 1839 times 1521 step by step
1839 × 1521 = 1521 × (1839)
+ 1521 × 9 what gives us 13689
+ 1521 × 30 that results in 45630
+ 1521 × 800 resulting in 1216800
+ 1521 × 1000 which equals 1521000

= 2797119
