Xiaoqiang walks (2/25) kilometers per minute. Going to school yesterday, 5 minutes after he set off from home, he returned to pick up the watercolor pen at the same speed. He spent 20 minutes in school yesterday. How many kilometers is Xiaoqiang's home from the school?
小强步行，每分钟行(2/25)千米．昨天上学，他从家出发5分钟后，又按原速返回拿水彩笔，昨天上学他共用了20分钟．小强家离学校有多少千米？
<gadget id="calculator">2 / 25</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">2 * 5</gadget>
<output>10</output>

<gadget id="calculator">20 - 10</gadget>
<output>10</output>

<gadget id="calculator">(2/25) * 10</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>