A cuboid marble with a volume of 30 cubic meters has a bottom surface of a rectangle with an area of 6 square meters. What is the height of the marble?
一块体积为30立方米的长方体大理石，底面是面积为6平方米的长方形，大理石高多少米．
<gadget id="calculator">30 / 6</gadget>
<output>5</output>

<result>5</result>