Beijing taxis charge 10 yuan within 3km, and 1.6 yuan per kilometer after 3km. How much does Zhang Chao have to pay for a 16km ride?
北京市出租车在3km以内收费10元，超过3km后，每千米加收1.6元，张超乘坐16km，她要付多少钱？
<gadget id="calculator">16 - 3</gadget>
<output>13</output>

<gadget id="calculator">13 * 1.6</gadget>
<output>20.8</output>

<gadget id="calculator">10 + 20.8</gadget>
<output>30.8</output>

<result>30.8</result>