No problem, we've got 2815 and 7975 to multiply
2815 × 7975 = 7975 × (2815)
+ 7975 × 5 that is equal 39875
+ 7975 × 10 that is equal 79750
+ 7975 × 800 what gives us 6380000
+ 7975 × 2000 that is equal 15950000

= 22449625
