Can gf form compute shareholder percentage based on capital contributions

I am looking for either a plugin or a feature request for a business registration form with the ff. characteristics:

  1. user enters from 2 to 14 names aka shareholders.
  2. adjacent to each name user will enter the monetary capital contribution per shareholder.
  3. the total of these amounts being 100%, the form will compute in another field the % of these capital contributions.
  4. form will output total subscribed, total paid up capital.

is this doable in gf, has someone already done it? does this require custom coding.

many thanks in advance!

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