Xiao Ming collected 324 stamps, 156 more than Xiao Min. How many stamps did they collect together?
小明收集了324张邮票，比小敏多156张，两人一共收集了多少张邮票？
<gadget id="calculator">324 - 156</gadget>
<output>168</output>

<gadget id="calculator">168 + 324</gadget>
<output>492</output>

<result>492</result>