In a cuboid container with a length of 15 cm and a width of 10 cm, put 4 eggs of the same size (completely submerged), and the water level rises by 2 cm. What is the average volume of each egg?
在一个长15cm，宽10cm的长方体容器内，放入4个大小相同的鸡蛋(完全浸没)，水面上升了2cm．平均每个鸡蛋体积是多少？
<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">15 * 10 * (1/2)</gadget>
<output>75</output>

<result>75</result>