One day, Xiao Ming went to school. It took him 10 minutes to go from home to school, and he traveled 80 meters per minute. When he returned from school, he returned by the same way. It took 2 minutes less. What was the speed when he returned?
一天小明上学，从家到学校用了10分钟，每分钟行80米，放学时按原路返回，少用了2分钟，返回时的速度是多少？
<gadget id="calculator">10 - 2</gadget>
<output>8</output>

<gadget id="calculator">80 / 8</gadget>
<output>10</output>

<gadget id="calculator">10 * 10</gadget>
<output>100</output>

<result>100</result>