It took Li Hua 15 minutes to walk 80 meters per minute from home to school, and 12 minutes to walk home after school. How many meters did he walk per minute when he returned home?
李华上学时从家到学校每分钟走80米，用了15分钟，放学回家时走了12分钟，他回家时每分钟走多少米？
<gadget id="calculator">15 / 12</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">80 * (5/4)</gadget>
<output>100</output>

<result>100</result>