If a piece of iron with a volume of 15 cubic decimeters sinks into a cuboid container with a length of 5 decimeters and a width of 2 decimeters, how many centimeters will the water level rise?
一块体积为15立方分米的铁块沉入一个长为5分米，宽为2分米的长方体容器中，水面会上升多少厘米．
<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">15 / 10</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) * 10</gadget>
<output>15</output>

<result>15</result>