Use 98 cm long iron wire to make a rectangle whose length to width ratio is 5:2. If it is drawn on a paper with a scale of 1:7, what is the area of the rectangle?
用98厘米长的铁丝做成长和宽之比是5：2的长方形．如果把它画在比例尺是1：7的图纸上，那么这个长方形的面积是多少？
<gadget id="calculator">98 / 2</gadget>
<output>49</output>

<gadget id="calculator">5 + 2</gadget>
<output>7</output>

<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">49 * (5/7) * (1/7) * 49 * (2/7) * (1/7)</gadget>
<output>10</output>

<result>10</result>