AA cost-Amount calculation

*This is an application that calculates the average cost and can be calculated in AA format; *Applicable to a wide range of friends who love to travel; * This tool can be used to calculate an AA system when traveling with friends. The default number is 4 people. * Ability to click Add to add a row of data under AA. User input name cost, slip to delete individual data, delete is not included in the total AA calculation; * You can calculate the total amount spent, averaging the cost per person;