Put an iron block with a volume of 30cm**3 into a glass container with water in a cuboid 5cm long and 2cm wide, how many cm will the water level rise?
把一个体积为30cm**3的铁块放入一个长5cm，宽2cm的长方体有水的玻璃容器中，水面会上升多少cm．
<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">30 / 10</gadget>
<output>3</output>

<result>3</result>