We're going to solve 8815 multiplied by 1800
8815 × 1800 = 1800 × (8815)
+ 1800 × 5 resulting in 9000
+ 1800 × 10 that results in 18000
+ 1800 × 800 which equals 1440000
+ 1800 × 8000 what gives us 14400000

= 15867000
