We're going to solve 7981 multiplied by 2589
7981 × 2589 = 2589 × (7981)
+ 2589 × 1 what gives us 2589
+ 2589 × 80 that equals 207120
+ 2589 × 900 which equals 2330100
+ 2589 × 7000 yielding 18123000

= 20662809
