The physical education teacher bought 5 volleyballs, each volleyball a yuan, and paid the salesperson 200 yuan, how much should be returned.
体育老师买了5个排球，每个排球a元，付给售货员200元，应找回多少元．
<gadget id="calculator">200 - 5</gadget>
<output>195</output>

<result>195</result>