The elder brother and the younger brother are walking opposite each other at the same time. The elder brother walks 80 meters per minute, and the younger brother walks 60 meters per minute. After 3 minutes, the elder brother turns around and chases the younger brother. After catching up with the younger brother, how many meters did the elder brother walk in total?
哥哥和弟弟同时同地相背而行，哥哥每分钟走80米，弟弟每分钟走60米，3分钟后哥哥转身追弟弟，追上弟弟后，哥哥一共走了多少米？
<gadget id="calculator">80 + 60</gadget>
<output>140</output>

<gadget id="calculator">80 - 60</gadget>
<output>20</output>

<gadget id="calculator">3 / 20</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">140 * (3/20)</gadget>
<output>21</output>

<gadget id="calculator">21 + 3</gadget>
<output>24</output>

<gadget id="calculator">80 * 24</gadget>
<output>1_920</output>

<result>1_920</result>