There is a party at the school. There are 8 balloons in red, yellow and green. Teacher Li bought 13 more balloons. How many balloons are there in total?
学校开联欢会，有红、黄、绿三种颜色的气球各8个，李老师又买来了13个气球，一共有多少个气球？
<gadget id="calculator">3 * 8</gadget>
<output>24</output>

<gadget id="calculator">24 + 10</gadget>
<output>34</output>

<result>34</result>