Alright, let's work through 1609 times 2590 step by step
1609 × 2590 = 2590 × (1609)
+ 2590 × 9 that results in 23310
+ 2590 × 00 what gives us 0
+ 2590 × 600 which equals 1554000
+ 2590 × 1000 what gives us 2590000

= 4167310
