A rectangular vegetable field has a perimeter of 150m, and the ratio of length to width is 9:6. What is the area of this vegetable field in m**2?
一块长方形菜地周长150m，长和宽的比是9：6，这块菜地的面积是多少m**2？
<gadget id="calculator">150 / 2</gadget>
<output>75</output>

<gadget id="calculator">9 + 6</gadget>
<output>15</output>

<gadget id="calculator">9 / 15</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">75 * (3/5)</gadget>
<output>45</output>

<gadget id="calculator">6 / 15</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">75 * (2/5)</gadget>
<output>30</output>

<gadget id="calculator">45 * 30</gadget>
<output>1_350</output>

<result>1_350</result>