The first phase of the Nanjing Metro project is divided into two parts: the elevated line and the underground line. The elevated line is about 8.5 kilometers long, and the length of the underground line is 1.6 times that of the elevated line. How many kilometers is the entire line of the first phase project?
南京地铁一期工程分高架线和地下线两部分，其中高架线大约长8.5千米，地下线的长度是高架线的1.6倍，一期工程全线大约长多少千米．
<gadget id="calculator">8.5 * 1.6</gadget>
<output>13.6</output>

<gadget id="calculator">13.6 + 8.5</gadget>
<output>22.1</output>

<result>22.1</result>