The new, i.e. current behavior for additional costs (or other surcharges and reductions) is:
Case 1:10,00000% is represented as 10%
Case 2:10.1245% is presented as 10.1245%
It would probably be better if case2 as
10.12% * is displayed.
And only when the number is clicked should the full precision be shown.
But how should this be presented in the calculation? Even with an asterisk?
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