The students ran, Xiaodong ran 485 meters, 45 meters more than Xiaohong, how many meters did Xiaohong run?
同学们跑步，小冬跑了485米，比小红多跑45米，小红跑了多少米？
<gadget id="calculator">485 - 45</gadget>
<output>440</output>

<result>440</result>