Alright, let's work through 1590 times 7892 step by step
1590 × 7892 = 7892 × (1590)
+ 7892 × 0 resulting in 0
+ 7892 × 90 giving us 710280
+ 7892 × 500 yielding 3946000
+ 7892 × 1000 yielding 7892000

= 12548280
