We're going to solve 3870 multiplied by 3159
3870 × 3159 = 3159 × (3870)
+ 3159 × 0 that is equal 0
+ 3159 × 70 which equals 221130
+ 3159 × 800 giving us 2527200
+ 3159 × 3000 which equals 9477000

= 12225330
