Alright, let's work through 1580 times 7397 step by step
1580 × 7397 = 7397 × (1580)
+ 7397 × 0 yielding 0
+ 7397 × 80 that is equal 591760
+ 7397 × 500 that is equal 3698500
+ 7397 × 1000 which equals 7397000

= 11687260
