The billing method of a taxi in a certain city is: 5 yuan within 3 kilometers, and 3 yuan for every two kilometers thereafter. Uncle Wang took a total of 10 kilometers, how much should he pay?
某城市出租车计费办法是：3千米以内5元，以后每两千米3元，王大伯共坐了10千米，应付多少钱？
<gadget id="calculator">10 - 3</gadget>
<output>7</output>

<gadget id="calculator">7 / 2</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">(7/2) * 3</gadget>
<output>21/2 = around 10.5</output>

<gadget id="calculator">(21/2) + 5</gadget>
<output>31/2 = around 15.5</output>

<result>31/2 = around 15.5</result>