A cube glass container has a side length of 2dm measured from the inside and a water depth of 1dm. An apple is submerged in water, and the depth of the water in the container is measured to be 15 cm. What is the volume of this apple?
一个正方体玻璃容器，从里面量棱长是2dm，水深1dm．把一个苹果放入水中浸没，这时量得容器内的水深是15cm．这个苹果的体积是多少？
<gadget id="calculator">15 / 10</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) - 1</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2 * 2 * (1/2)</gadget>
<output>2</output>

<result>2</result>