A cube glass vessel, measured from the inside, is 20cm in length and width, pour 6L of water into the vessel, and then put an apple into the water. At this time, the depth of water in the container is measured to be 17cm. What is the volume of this apple?
一个正方体玻璃器皿，从里面量长、宽均为20cm，向容器中倒入6L水，再把一个苹果放入水中．这时量得容器内的水深是17cm．这个苹果的体积是多少？
<gadget id="calculator">2 * 2 * 1.7</gadget>
<output>6.8</output>

<gadget id="calculator">6.8 - 6</gadget>
<output>0.8</output>

<result>0.8</result>