Put a fence around a flower bed with a length of 46 meters and a width of 12 meters. What is the length of the fence?
在一个长46米，宽12米的花坛四周围上栅栏，要围栅栏的长是多少米
<gadget id="calculator">46 + 12</gadget>
<output>58</output>

<gadget id="calculator">58 * 2</gadget>
<output>116</output>

<result>116</result>