Xiao Ming’s distance from home to school is 800 meters, and it usually takes 10 minutes to get there. But one day he was in a hurry and walked 20 meters more than usual per minute on average. How long did it take Xiao Ming to go from home to school that day?
小明从家到学校的路程是800米，平时走10分钟就到，结果一天他有急事，平均每分钟比平时多走了20米，这天小明从家到学校用了多少时间？
<gadget id="calculator">800 / 10</gadget>
<output>80</output>

<gadget id="calculator">80 + 20</gadget>
<output>100</output>

<gadget id="calculator">800 / 100</gadget>
<output>8</output>

<result>8</result>