A cuboid pool covers an area of 6 square meters, and its depth is 1.5 meters. What is the maximum liter of water that the pool can hold.
一个长方体水池占地6平方米，他深1.5米，池内最多能容水多少升．
<gadget id="calculator">6 * 1.5</gadget>
<output>9</output>

<result>9</result>