A rectangular vegetable field has a length of 142 meters and a width of 48 meters. There is a path around the vegetable field. How many meters is this path?
一块长方形菜地的长是142米，宽是48米．沿菜地四周有一条小路，这条小路大约长多少米？
<gadget id="calculator">142 + 48</gadget>
<output>190</output>

<gadget id="calculator">190 * 2</gadget>
<output>380</output>

<result>380</result>