Can you help with the PR Corporate Income Tax 2019 cases? Please see instructions below.

PR Corporate Income Tax 2019 Instructions: 1. Calculate the tax base for the corporations mentioned in each case. 2. Calculate the tax determined. Cases: a) Dallas Corporation, Inc. had total income of $ 500,000, exclusions of $ 10,000, and some allowable deductions of $ 25,000. The normal contribution is $ 20,000. The corporation had tax credits of $ 10,000 and paid $ 5,000 of contributions in advance. b) New City, Inc. Corporation generated gross profits of $ 900,000, but during the year several customers returned merchandise totaling $ 3,000. Additionally, the corporation offered $ 700 for various discounts to excellent customers. New City, Inc. corporation made advance payments of contributions for $ 12,000. This corporation had exclusions for $ 20,000 and there were no allowable deductions. The normal contribution is $ 22,000. c) Best Bucks, Inc. Corporation had income of $ 1,000,000, a normal contribution of $ 30,000, allowable deductions of $ 55,000 and exclusions of $ 20,000. The corporation also had withholdings of $ 60,000