In the sixth grade of a certain elementary school, a total of three newspapers were subscribed, and each student subscribed to two newspapers. A total of 80 copies of "Youth News", 110 copies of "Chinese Newspaper", and 126 copies of "Mathematics Newspaper" were subscribed. How many students are there in the "Journal of Mathematics" and "Journal of Mathematics"?
某小学六年级一共订了三份报纸，每个同学都分别订了两份报纸，共订《少年报》80份，《语文报》110份，《数学报》126份，那么既订《语文报》又订《数学报》的同学一共有多少人．
<gadget id="calculator">80 + 110 + 126</gadget>
<output>316</output>

<gadget id="calculator">316 / 2</gadget>
<output>158</output>

<gadget id="calculator">126 - 158</gadget>
<output>-32</output>

<gadget id="calculator">110 + (-32)</gadget>
<output>78</output>

<result>78</result>