Each worker in a garment factory can produce 4 coats or 7 pairs of trousers per day, and a coat and a pair of trousers constitute a set of clothing. There are currently 66 workers in production, how many sets can be produced at most every day.
服装厂的工人每人每天可以生产4件上衣或7条裤子，一件上衣和一条裤子为一套服装．现有66名工人生产，每天最多能生产多少套．
<gadget id="calculator">7 + 4</gadget>
<output>11</output>

<gadget id="calculator">66 / 11</gadget>
<output>6</output>

<gadget id="calculator">6 * 7</gadget>
<output>42</output>

<gadget id="calculator">4 * 42</gadget>
<output>168</output>

<result>168</result>