There are 500 students in a certain school, among whom 359 students take mathematics and 408 students take literature, so at least how many students take both courses?
某一学校有500人，其中选修数学的有359人，选修文学的有408人，那么两种课程都选的学生至少有多少？
<gadget id="calculator">408 - 500</gadget>
<output>-92</output>

<gadget id="calculator">359 + (-92)</gadget>
<output>267</output>

<result>267</result>