The Cultural Palace held an art exhibition, displaying many paintings. Among them, there are 26 paintings that are not in the sixth grade, and 25 paintings that are not in the fifth grade. Now we know that there are 37 paintings in the fifth and sixth grades, and how many paintings are there in other grades.
文化宫举办画展，展出许多幅画．其中有26幅画不是六年级的，有25幅画不是五年级的，现在知道五、六年级共有37幅画，其他年级共有多少幅画．
<gadget id="calculator">26 + 25 + 37</gadget>
<output>88</output>

<gadget id="calculator">88 / 2</gadget>
<output>44</output>

<gadget id="calculator">44 - 37</gadget>
<output>7</output>

<result>7</result>