The perimeter of a rectangular playground is 350 meters, and the ratio of length to width is 4:3. What is the area of the playground in square meters?
一个长方形操场的周长是350米，长与宽的比是4：3．这个操场的面积是多少平方米？
<gadget id="calculator">350 / 2</gadget>
<output>175</output>

<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">175 * (4/7)</gadget>
<output>100</output>

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">175 * (3/7)</gadget>
<output>75</output>

<gadget id="calculator">100 * 75</gadget>
<output>7_500</output>

<result>7_500</result>