My name is Xiao Ming, and I collect 78 stamps. I am Xiao Qiang, and Xiao Ming collects twice as many stamps as I do. How many stamps does Xiaoqiang collect?
我叫小明，集邮78张，我是小强，小明集邮的张数是我的2倍．小强集邮多少张？
<gadget id="calculator">78 / 2</gadget>
<output>39</output>

<result>39</result>