rectangular flower bed is 6 meters long and 3 meters wide. If 4 flowers are planted per square meter in a flower bed, how many flowers can be planted in this flower bed?
一个长方形花坛，长6米，宽3米．如果在花坛里每平方米种4株花，这个花坛一共可以种多少株花？
<gadget id="calculator">6 * 3 * 4</gadget>
<output>72</output>

<result>72</result>