A section of road, Xiaoxiao walked the full length (3/8) on the first day, and the second day was the same as the first day. How much of the full length remains.
一段公路，笑笑第一天行了全长的(3/8)，第二天行的和第一天一样．还剩下全长的多少没有行．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8) - (3/8)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>