Xiao Ming has some stamps, and he gives half of the stamps to Xiao Hong, leaving 50 stamps. How many copies did he have?
小明有一些邮票，他把邮票的一半多2张送给小红，还剩下50张．他原来有多少张？
<gadget id="calculator">50 + 2</gadget>
<output>52</output>

<gadget id="calculator">52 * 2</gadget>
<output>104</output>

<result>104</result>