The side length of a square vegetable field is 196 meters. If you walk around the vegetable field, how many meters will you walk in total?
正方形菜地的边长是196米，沿菜地的四周走一圈，共走了多少米？
<gadget id="calculator">196 * 4</gadget>
<output>784</output>

<result>784</result>