Xiao Ming rides a bicycle from A to B. After riding (1/5), the car breaks down. He pushes the cart to the midpoint repair station, and then rides to B after repairing it. How much?
小明骑车从甲地到乙地，骑了(1/5)后，车子坏了，推车行走到中点修理站，修好后再骑到乙地，小明推车行走的路程是全程的几分之几？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/2) - (1/5)</gadget>
<output>3/10 = around 0.3</output>

<result>3/10 = around 0.3</result>