The students go on a spring outing. The first car can hold 26 people, and the second car can hold 39 people. There are 80 students in total. How many people can’t get on the bus?
同学们去春游，第一辆车可以坐26人，第二辆车可以坐39人，一共有80名同学，还有多少人不能上车？
<gadget id="calculator">26 + 39</gadget>
<output>65</output>

<gadget id="calculator">80 - 65</gadget>
<output>15</output>

<result>15</result>