A rectangle with a length of 3 cm and a width of 2 cm. What is its circumference in centimeters?
一个长是3厘米，宽是2厘米的长方形．它的周长是多少厘米？
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

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

<result>10</result>