Micro-Transaction Auditing: Pro-Rata Gratuity Allocation

Splitting shared service costs requires dividing an unweighted baseline ledger against a set group sizing metric. This calculator maps custom gratuity allocations to prevent transaction rounding friction.

Methodology: The script isolates the base cost value, runs standard linear growth options ($\text{Tip Amount} = \text{Bill} \cdot \text{Tip Percent}$), and applies a flat division rule to calculate the final per-person shares.