On the weekend, Xiaohong and grandpa went for a walk. The two walked 450 meters in 9 minutes. How many meters did each person walk per minute?
周末，小红和爷爷去散步，两人9分钟走了450米，每人每分钟走多少米？
<gadget id="calculator">450 / 9</gadget>
<output>50</output>

<result>50</result>