The distance from Xiaoming's home to the station is 6 kilometers. When he walked to the station at a speed of 4 kilometers per hour, the car had already driven away for 5 minutes. What is his hourly speed if he is to arrive at the station 10 minutes before driving?
小明家到车站的距离是6千米，他用每小时4千米的速度步行到车站时，车已开走5分钟了．如果要在开车前10分钟到达车站，他每小时的速度应该是多少？
<gadget id="calculator">6 / 4</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(3/2) - (1/12) - (1/6)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">6 / (5/4)</gadget>
<output>24/5 = around 4.8</output>

<result>24/5 = around 4.8</result>