We're going to solve 3131 multiplied by 1278
3131 × 1278 = 1278 × (3131)
+ 1278 × 1 that is equal 1278
+ 1278 × 30 resulting in 38340
+ 1278 × 100 resulting in 127800
+ 1278 × 3000 that results in 3834000

= 4001418
