Xiaojun has 120 stamps and Tiantian has 30 stamps. After Xiaojun gives Tiantian how many stamps, the two will have the same amount of stamps?
小军有邮票120枚，甜甜有邮票30枚，小军给甜甜多少枚之后，两人的邮票就一样多？
<gadget id="calculator">120 - 30</gadget>
<output>90</output>

<gadget id="calculator">90 / 2</gadget>
<output>45</output>

<result>45</result>