Sunshine Elementary School is going to hold a parent-teacher meeting. There are 7 double chairs and 26 single chairs in Class 3 and Class 3. How many people can they sit in total?
阳光小学要开家长会，三3班教室里有双人椅7把，单人椅26把，一共能坐多少人．
<gadget id="calculator">7 * 2</gadget>
<output>14</output>

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

<result>40</result>