Small animals are holding a mountain climbing competition. It takes 525 meters to go up the mountain, and 81 meters less to walk down the mountain than up the mountain. How long does the mountain climbing competition have to walk?
小动物举行爬山比赛，上山要走525米，下山比上山要少走81米，爬山比赛一共要走到少米？
<gadget id="calculator">525 - 81</gadget>
<output>444</output>

<gadget id="calculator">525 + 444</gadget>
<output>969</output>

<result>969</result>