A cuboid container with a length and a width of 2dm, pour 5.5L of water into the container, and then put an apple into the water. At this time, the water depth in the container is 15cm. Find the volume of the apple.
一个长方体容器，里面长、宽均为2dm，把5.5L水倒入容器内，再把一个苹果放入水中，这时容器内的水深15cm，求苹果的体积．
<gadget id="calculator">15 / 10</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">2 * 2 * (3/2)</gadget>
<output>6</output>

<gadget id="calculator">6 - 5.5</gadget>
<output>0.5</output>

<result>0.5</result>