The distance from the school to the county is 28 kilometers. In addition to taking a car, you also need to walk for a while. The speed of the car is 36 kilometers per hour, and the speed of walking is 4 kilometers per hour. If the whole journey takes 1 hour, how many kilometers is the walking distance?
学校到县城有28千米，除乘汽车之外，还需要步行一段路，汽车的速度是每小时36千米，步行的速度是每小时4千米．如果行全程共需要1小时，那么步行的路程是多少千米．
<gadget id="calculator">36 - 28</gadget>
<output>8</output>

<gadget id="calculator">36 - 4</gadget>
<output>32</output>

<gadget id="calculator">8 / 32</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">4 * (1/4)</gadget>
<output>1</output>

<result>1</result>