Yang Liang is a stamp collector. The commemorative stamps he collected accounted for 45%, and the special stamps accounted for 20%. The commemorative stamps were 1,400 more than the special stamps. How many stamps did Yang Liang collect? (solution by equation)
杨亮是个集邮爱好者．他收集的纪念邮票占45%，特种邮票占20%，纪念邮票比特种邮票多1400张，杨亮共收集了多少张邮票？(用方程解)
<gadget id="calculator">1_400 / 0.25</gadget>
<output>5_600</output>

<result>5_600</result>