A rectangular vegetable field is 18 meters long, and the ratio of width to length (1/6) is how many square meters is the area of this vegetable field?
一块长方形菜地，长18米，宽比长短(1/6)，这块菜地的面积是多少平方米？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/6)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">18 * (5/6)</gadget>
<output>15</output>

<gadget id="calculator">18 * 15</gadget>
<output>270</output>

<result>270</result>