Calculator to run from usb drive

I need a calculator that will run on Windows XP and directly from a flash-drive or desktop with no installation required and no admin rights needed. Calculation is to show the average wage a person earns for a specific period based on their Year To Date earnings and how many times they have been paid. Need several fields: Employment begin date: (text field, mm/dd/yyyy) Paid how often: (drop down) Year To Date Earnings: (text field) Upon submitting the "Calculate" button the results will display: > Average Weekly Earnings: $ (Show result in **BLUE**) > Average Bi-Weekly Earnings: $ (Show result in **BLACK**) > Average Monthly Earnings: $ (Show result in **RED**) > Average Bi-Monthly Earnings: $ (Show result in **GREEN**) > Results: need to show the average earnings for each of the described results based on the criteria entered. * Weekly: A person gets paid every week, for example every Friday * Bi-Weekly: A person gets paid every other week, for example, every other Friday * Monthly: A person gets paid once per month, for example the first day of every month * Bi-Monthly: A person gets paid 2 times per month, for example on the first and fifteenth of every month ## Deliverables Sample image (just a graphic)