The perimeter of a rectangle is 180 cm, and the ratio of its length to width is 7:2, what is its area?
一个长方形的周长是180厘米，它的长和宽的比是7：2，它的面积是多少？
<gadget id="calculator">180 / 2</gadget>
<output>90</output>

<gadget id="calculator">7 + 2</gadget>
<output>9</output>

<gadget id="calculator">7 / 9</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">90 * (7/9)</gadget>
<output>70</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">90 * (2/9)</gadget>
<output>20</output>

<gadget id="calculator">70 * 20</gadget>
<output>1_400</output>

<result>1_400</result>