parallelogram underground parking lot has a base of 51 meters and a height of 15 meters. It can park 85 cars in total. How many square meters does each car occupy on average?
一个平行四边形地下停车场，底是51米、高是15米，共可停车85辆，平均每辆车占地多少平方米？
<gadget id="calculator">15 / 85</gadget>
<output>3/17 = around 0.176471</output>

<gadget id="calculator">51 * (3/17)</gadget>
<output>9</output>

<result>9</result>