There is 300ml of water in a measuring cup. After an egg is completely submerged in the water, the water level rises to the mark of 360ml. What is the volume of the egg?
一个量杯内有300毫升水，把一个鸡蛋完全淹没在水中后，水面上升到360毫升的刻度处，这个鸡蛋的体积是多少．
<gadget id="calculator">360 - 300</gadget>
<output>60</output>

<result>60</result>