The length of a rectangle is 5 centimeters and the width is 3 centimeters. What is the perimeter of the rectangle in centimeters?
一个长方形的长是5分米，宽是3厘米，这个长方形的周长是多少厘米
<gadget id="calculator">5 * 10</gadget>
<output>50</output>

<gadget id="calculator">50 + 3</gadget>
<output>53</output>

<gadget id="calculator">53 * 2</gadget>
<output>106</output>

<result>106</result>