The art group has 8 people, and the sports group has 15 people twice as many as the art group. How many people are there in the sports group?
美术小组有8人，体育小组的比美术小组的2倍还多15人，体育小组有多少人．
<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<gadget id="calculator">16 + 15</gadget>
<output>31</output>

<result>31</result>