rectangular vegetable field is 18 meters long, and the ratio of width to length is 3 meters. Uncle Wang grows cabbages on this vegetable field. Each cabbage covers an area of 0.36 square meters. How many cabbages can be planted on this field?
一块长方形菜地长18米，宽比长短3米，王大爷在这块菜地上种白菜，每棵白菜占地0.36平方米，这块地可以种白菜多少棵？
<gadget id="calculator">18 - 3</gadget>
<output>15</output>

<gadget id="calculator">15 / 0.36</gadget>
<output>41.666667</output>

<gadget id="calculator">18 * 41.666667</gadget>
<output>750.000006</output>

<result>750.000006</result>