The base area of a cuboid is 12 decimeters**2, if its height increases by 5 decimeters, how much does its volume increase by decimeters**3.
一个长方体的底面积是12分米**2，如果它的高增加5分米，那么它的体积增加多少分米**3．
<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<result>60</result>