A rectangular parallelepiped container has a length and width of 2dm measured from the inside. Pour 4.2 liters of water into the container, and then put an apple into the water. At this time, the height of the water in the container is measured to be 12 cm. What is the volume of the apple? (solution with equation)
一个长方体容器，从里面量长、宽为2dm，向容器倒入4.2升水，再把一个苹果放入水中，这时量得容器内的水高是12cm，这个苹果的体积是多少呢？(用方程解答)
<gadget id="calculator">12 / 10</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">2 * 2 * (6/5)</gadget>
<output>24/5 = around 4.8</output>

<gadget id="calculator">(24/5) - 4.2</gadget>
<output>0.6</output>

<result>0.6</result>