How many conical lead ingots with the same base and height can be cast from 3 cylindrical lead ingots.
3个圆柱形铅锭，可以熔铸成多少个与它等底等高的圆锥形铅锭．
<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<result>9</result>