We're going to solve 9871 multiplied by 2580
9871 × 2580 = 2580 × (9871)
+ 2580 × 1 giving us 2580
+ 2580 × 70 what gives us 180600
+ 2580 × 800 resulting in 2064000
+ 2580 × 9000 yielding 23220000

= 25467180
