Munson Performance Auto, Inc., modifies $375$ autos per year. The manager, Adam Munson, is interested in obtaining a measure of overall performance. He has asked you to provide him with a multifactor measure of last year's performance as a benchmark for future comparison. You have assembled the following data. Resource inputs were: labor, $10,500$ hours; $540$ suspension and engine modification kits; and energy, $110,000$ kilowatt$-$hours. Average labor cost last year was $$30$ per hour, kits cost $$1,000$ each, and energy costs were $$4$ per kilowatt$-$hour.

The overall performance at Munson Performance Auto, Inc. $=$ autos$/$dollar of input $($round your response to six decimal places$).$