Fill a cuboid water tank with a length of 15 cm and a width of 12 cm with water of a height of 6 cm. Put an apple into the water. At this time, the height of the water is 12 cm. What is the volume of the apple in square centimeters?
在一个长15厘米，宽12厘米的长方体水缸中装6厘米高的水，把一颗苹果全部放入水中，这时水高12厘米，这个苹果的体积是多少平方厘米？
<gadget id="calculator">12 - 6</gadget>
<output>6</output>

<gadget id="calculator">15 * 12 * 6</gadget>
<output>1_080</output>

<result>1_080</result>