It took Dad 4 minutes to type the document on the computer, and he typed 62 characters per minute. How many characters are there in this document?
爸爸用电脑打文件用了4分钟，他每分钟打62个字，这份文件一共有多少个字？
<gadget id="calculator">62 * 4</gadget>
<output>248</output>

<result>248</result>