what is the EV/EBITDA ratio?

A company had total revenues of $58 milition, operating margin of 26.8%, and depreciation and amortization expense of $24 million over the trailing twelve months. The company currently has $253 million in total debt and $79 million in cash and cash equivalents. The company's shares are currently trading at $322 per share and there are 9 million shares outstanding. What is its EV/EBITDA ratio? Round to one decimal place