We're going to solve 2121 multiplied by 2185
2121 × 2185 = 2185 × (2121)
+ 2185 × 1 yielding 2185
+ 2185 × 20 producing 43700
+ 2185 × 100 what gives us 218500
+ 2185 × 2000 giving us 4370000

= 4634385
