There are 42 girls in the school band, and the number of boys is twice that of girls. How many people are there in the school band?
学校乐队有女生42人，男生人数是女生的2倍，校乐队有多少人？
<gadget id="calculator">42 * 2</gadget>
<output>84</output>

<gadget id="calculator">84 + 42</gadget>
<output>126</output>

<result>126</result>