The starting fare of a taxi is 5 yuan, and the fee is 1.8 yuan per kilometer after 2 kilometers. How much taxi fare should Xiao Ming pay to go to a place 15 kilometers away?
出租车的起步价是5元，2千米以后每千米收费1.8元，小明要到15千米远的地方，应付出租车费多少元？
<gadget id="calculator">15 - 2</gadget>
<output>13</output>

<gadget id="calculator">1.8 * 13</gadget>
<output>23.4</output>

<gadget id="calculator">5 + 23.4</gadget>
<output>28.4</output>

<result>28.4</result>