We're going to solve 4121 multiplied by 3180
4121 × 3180 = 3180 × (4121)
+ 3180 × 1 yielding 3180
+ 3180 × 20 that equals 63600
+ 3180 × 100 resulting in 318000
+ 3180 × 4000 that equals 12720000

= 13104780
