Xiaopang has been practicing writing large characters with a brush from 8:30 to 9:10 in the morning, with an average of 5 characters per minute. Based on this calculation, how many characters did he write in total?
小胖从上午8点30分到9点10分一直在练习写毛笔大字，平均每分钟写5个字，照这样计算，他一共写了多少个字？
<gadget id="calculator">40 * 5</gadget>
<output>200</output>

<result>200</result>