Grandpa went for a walk yesterday afternoon. He walked 3 times around a rectangular wheat field 200 meters long and 80 meters wide. How many meters did you walk in total?
昨天下午爷爷去散步，他绕一块长200米，宽80米的长方形麦田走了3圈．一共走了多少米？
<gadget id="calculator">200 + 80</gadget>
<output>280</output>

<gadget id="calculator">280 * 2 * 3</gadget>
<output>1_680</output>

<result>1_680</result>