Alright, let's work through 1689 times 8521 step by step
1689 × 8521 = 8521 × (1689)
+ 8521 × 9 that results in 76689
+ 8521 × 80 that equals 681680
+ 8521 × 600 what gives us 5112600
+ 8521 × 1000 that is equal 8521000

= 14391969
