The distance between Xiaoyun and Xiaobo’s house is 1500 meters, one is on the south side of the school and the other is on the north side of the school. Both of them have to walk 12 minutes to the school. It is known that Xiaoyun walks 75 meters per minute, so how many meters per minute does Xiaobo walk?
小云与小波家相距1500米，一个在学校的南边，一个在学校的北边，两人到学校都要走12分钟，已知小云每分钟走75米，那么小波每分钟走多少米？
<gadget id="calculator">1_500 / 12</gadget>
<output>125</output>

<gadget id="calculator">125 - 75</gadget>
<output>50</output>

<result>50</result>