Li Huan spent 12.5 yuan in a taxi. The taxi fare is: 8 yuan within 2 kilometers, and 1.5 yuan for every kilometer beyond 2 kilometers. How many miles did he travel by car?
李欢坐出租车花了12.5元．出租车的收费标准是：2千米以内收取8元，超过2千米后每千米加收1.5元．他坐车所走的路程是多少千米．
<gadget id="calculator">12.5 - 8</gadget>
<output>4.5</output>

<gadget id="calculator">4.5 / 1.5</gadget>
<output>3</output>

<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<result>5</result>