The starting fare of a taxi is 8.00 yuan, plus 1.6 yuan for every additional 1km over 3 kilometers. Xiao Ming paid 13.6 yuan for a taxi. How far did he take?
出租车的起步价是8.00元，3km以上每增加1km加1.6元，小明坐出租车付了13.6元的车费，他坐了多远？
<gadget id="calculator">13.6 - 8</gadget>
<output>5.6</output>

<gadget id="calculator">5.6 / 1.6</gadget>
<output>3.5</output>

<gadget id="calculator">3.5 + 3</gadget>
<output>6.5</output>

<result>6.5</result>