Alright, let's work through 1689 times 2707 step by step
1689 × 2707 = 2707 × (1689)
+ 2707 × 9 what gives us 24363
+ 2707 × 80 yielding 216560
+ 2707 × 600 which equals 1624200
+ 2707 × 1000 which equals 2707000

= 4572123
