A bus carries a total of 50 passengers. Some of them get off on the way, and each ticket costs 3 yuan. The other part gets off at the terminal, and each ticket costs 5 yuan. The conductor collects a total of 216 yuan. How many people get off on the way? ．
一辆公共汽车载客共50人，其中一部分在中途下车，每张票价3元，另一部分在终点下车，每张票价5元，售票员共收款216元，中途下车多少人．
<gadget id="calculator">5 * 50</gadget>
<output>250</output>

<gadget id="calculator">250 - 216</gadget>
<output>34</output>

<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">34 / 2</gadget>
<output>17</output>

<result>17</result>