For each of the piece-rate workers below, determine gross pay. If the employees have a standard 40-hour workweek, what is their effective hourly wage? Based on the FLSA minimum wage in South Dakota, calculate each employees minimum weekly pay. What is the difference the employer must pay between the calculated gross pay and the calculated FLSA minimum pay? (Reminder: gross pay divided by 40 hours equals hourly wage.) (Do not round intermediate calculations. Round your final answers to 2 decimal places.)