We're going to solve 3985 multiplied by 1812
3985 × 1812 = 1812 × (3985)
+ 1812 × 5 yielding 9060
+ 1812 × 80 giving us 144960
+ 1812 × 900 that equals 1630800
+ 1812 × 3000 that is equal 5436000

= 7220820
