We're going to solve 1580 multiplied by 7810
1580 × 7810 = 7810 × (1580)
+ 7810 × 0 resulting in 0
+ 7810 × 80 producing 624800
+ 7810 × 500 that results in 3905000
+ 7810 × 1000 which equals 7810000

= 12339800
