Xiaohong has 120 stamps and Xiaoming has 52 stamps. After how many stamps Xiaohong gives to Xiaoming, the ratio of stamps between Xiaohong and Xiaojun is exactly 1:1.
小红有邮票120张，小明有邮票52张，小红送给小明多少张邮票后，小红与小军的邮票数之比刚好是1：1．
<gadget id="calculator">120 + 52</gadget>
<output>172</output>

<gadget id="calculator">172 / 2</gadget>
<output>86</output>

<gadget id="calculator">120 - 86</gadget>
<output>34</output>

<result>34</result>