rectangular flower bed is 16 meters long and 7 meters wider than it is wide. What is the perimeter of the flower bed in meters?
一个长方形花坛，长16米，比宽多7米，这个花坛的周长是多少米？
<gadget id="calculator">16 - 7</gadget>
<output>9</output>

<gadget id="calculator">16 + 9</gadget>
<output>25</output>

<gadget id="calculator">25 * 2</gadget>
<output>50</output>

<result>50</result>