There are 48 watercolor pens in one large box and one small box, and the number in the large box is twice that of the small box. How many watercolor pens are in a small box?
一大盒和一小盒水彩笔共48支，大盒里的支数是小盒的2倍．一小盒装了多少支水彩笔？
<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">48 / 3</gadget>
<output>16</output>

<result>16</result>