Please show work so I can try to figure it out thank you for the help.

A health club has three employees who work on lead generation. Each employee works 40 hours a week and is paid $25 an hour. Each employee identifies an average of 500 possible leads a week from a list of 8,000 names. Approximately 15 percent of the leads become members and pay a one-time fee of $125. Material costs are $300 per week, and overhead costs are $1,000 per week. Calculate the multifactor productivity for this operation in fees generated per dollar of input