There is a vegetable field with a circumference of 720 meters, and the ratio of length to width is 5:4. What is the area of this vegetable field?
有一块周长是720米的菜地，长与宽的比是5：4．这块菜地的面积是多少？
<gadget id="calculator">720 / 2</gadget>
<output>360</output>

<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">360 * (5/9)</gadget>
<output>200</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">360 * (4/9)</gadget>
<output>160</output>

<gadget id="calculator">200 * 160</gadget>
<output>32_000</output>

<result>32_000</result>