During the summer vacation, my mother took Xiao Ming to grandma’s house, first traveled the whole distance by car (1/2), then took the boat for the whole distance (3/8), and walked for the rest of the distance. What percentage of the journey is less?
放暑假时，妈妈带小明去外婆家，先坐车走了全程的(1/2)，再乘船走了全程的(3/8)，余下的路程是步行，他们步行的路程比乘船的路程少占全程的几分之几？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/2) - (3/8)</gadget>
<output>1/8 = around 0.125</output>

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

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