Sending mail via EMS costs 22 yuan per copy. Aunt Zhang paid 200 yuan when sending the mail, and got 46 yuan back. How many emails did she send?
通过特快专递寄送邮件每份需要22元．张阿姨寄送邮件时付了200元，找回46元．她寄出了几份邮件？
<gadget id="calculator">200 - 46</gadget>
<output>154</output>

<gadget id="calculator">154 / 22</gadget>
<output>7</output>

<result>7</result>