Alright, let's work through 1590 times 7557 step by step
1590 × 7557 = 7557 × (1590)
+ 7557 × 0 that equals 0
+ 7557 × 90 resulting in 680130
+ 7557 × 500 what gives us 3778500
+ 7557 × 1000 that equals 7557000

= 12015630
