Alright, let's work through 1689 times 2872 step by step
1689 × 2872 = 2872 × (1689)
+ 2872 × 9 that equals 25848
+ 2872 × 80 that is equal 229760
+ 2872 × 600 which equals 1723200
+ 2872 × 1000 giving us 2872000

= 4850808
