For a rectangle, the ratio of length to width is 3:2, what is the circumference of the short side
一个长方形，长与宽的比是3：2，一条短边是周长的多少
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">2 / 10</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>