Xiaohong writes 31 brush characters every day, and insists on writing like this for a week, how many brush characters can she write in total.
小红每天写31个毛笔字，像这样坚持写一个星期，一共能写多少个毛笔字．
<gadget id="calculator">31 * 7</gadget>
<output>217</output>

<result>217</result>