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This web-enabled spreadsheet calculates a loan repayment schedule up to 30 years.

Enter the loan amount, interest rate, loan period, and start date to generate the schedule.

This is a web-enabled invoice that uses Excel's VLOOKUP function to populate form values.

Enter a Customer ID and then add line items the dropdown menus. Enter quantities to calculate results.

This form uses PHP Data Objects (PDO) to look up values in a SQL database.

Enter characteristics and carat weight to run a query that returns a price per carat value to calculate stone price.