Alright, let's work through 1989 times 1595 step by step
1989 × 1595 = 1595 × (1989)
+ 1595 × 9 which equals 14355
+ 1595 × 80 giving us 127600
+ 1595 × 900 what gives us 1435500
+ 1595 × 1000 which equals 1595000

= 3172455
