Class 31 students donated items to the "Hand in Hand" friends. There were 26 people who donated clothes, 32 people who donated stationery, and 18 people who donated both. How many students do you donate?
三1班同学给"手拉手"小伙伴捐物品，捐衣物的有26人，捐文具的有32人，两样都捐的有18人．捐物品的同学一共有几人？
<gadget id="calculator">32 - 18</gadget>
<output>14</output>

<gadget id="calculator">26 + 14</gadget>
<output>40</output>

<result>40</result>