A tree-lined road in a community is 180 meters long. Xiaojun and his father start morning exercises at the same time from the starting point of the tree-lined road at a uniform speed. When Xiaojun walked to (1/3) of this boulevard, Dad had already reached the end of the boulevard. Then Dad goes back and walks towards Xiaojun. After meeting Xiaojun, he goes to the finish line. How many meters did Dad walk in total since he set off?
某小区的一条林荫道长180米，小军和爸爸分别以均匀的速度同时从林荫道的起点出发进行晨练．当小军走到这条林荫道的(1/3)时，爸爸已经到达了林荫道的终点．然后爸爸返回与小军相向而行，遇到小军以后再走向终点，到达终点以后再与小军相向而行…直到小军到达终点．爸爸从出发开始，一共走了多少米？
<gadget id="calculator">180 * 3</gadget>
<output>540</output>

<result>540</result>