A hall is 16 meters long and 12 meters wide, with a carpet in the middle and a 2-meter-wide floor around it. What is the perimeter of the carpet in meters?
一间大厅，长是16米，宽是12米，中间铺上地毯，四周留2米宽的地板，地毯的周长是多少米？
<gadget id="calculator">16 - 2</gadget>
<output>14</output>

<gadget id="calculator">12 - 2</gadget>
<output>10</output>

<gadget id="calculator">14 + 10</gadget>
<output>24</output>

<gadget id="calculator">24 * 2</gadget>
<output>48</output>

<result>48</result>