A rectangle is 17 cm long and 7 cm longer than its width, what is the perimeter of the rectangle in cm?
一个长方形长17厘米，比宽长7厘米，这个长方形的周长是多少厘米？
<gadget id="calculator">17 - 7</gadget>
<output>10</output>

<gadget id="calculator">10 + 17</gadget>
<output>27</output>

<gadget id="calculator">27 * 2</gadget>
<output>54</output>

<result>54</result>