A basketball court is 28 meters long and 15 meters wide, what is the perimeter of the basketball court in meters?
篮球场长28米，宽15米，篮球场的周长是多少米．
<gadget id="calculator">28 + 15</gadget>
<output>43</output>

<gadget id="calculator">43 * 2</gadget>
<output>86</output>

<result>86</result>