It takes 1.5 hours for a car to drive from place A to place B. When returning from place B to place A, it speeds up 10 kilometers per hour. It takes 0.5 hours. How many kilometers are there between places A and B?
一辆汽车从甲地开往乙地用去1.5小时，由乙地返回甲地时每小时加快10千米，用了0.5小时，甲乙两地相距多少千米？
<gadget id="calculator">10 * 0.5</gadget>
<output>5</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) * 0.5</gadget>
<output>0.333333</output>

<gadget id="calculator">1 - 0.333333</gadget>
<output>0.666667</output>

<gadget id="calculator">5 / 0.666667</gadget>
<output>7.499996</output>

<result>7.499996</result>