A piece of iron wire is 120 meters long and forms a rectangle with it. The ratio of length to width is 7:5. What is the area of this rectangle?
一根铁丝长120米，用它围成一个长方形，长与宽的比是7：5，这个长方形的面积是多少？
<gadget id="calculator">120 / 2</gadget>
<output>60</output>

<gadget id="calculator">5 + 7</gadget>
<output>12</output>

<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">60 * (7/12)</gadget>
<output>35</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">60 * (5/12)</gadget>
<output>25</output>

<gadget id="calculator">35 * 25</gadget>
<output>875</output>

<result>875</result>