Xiaoya has already collected 158 stamps, and this semester she plans to increase the total number of stamps to 220, so how many stamps will she collect this semester to complete the plan?
小亚原先已经集了158张邮票，这个学期她打算将邮票总数增加到220张，那么这个学期她要收集多少张邮票，才能完成计划？
<gadget id="calculator">220 - 158</gadget>
<output>62</output>

<result>62</result>