Xiaolan wrote 560 brush characters in 4 weeks. How many brush characters did she write on average every day? Which of the following is correct
小兰4个星期写了560个毛笔字，她平均每天写了多少个毛笔字？下面列式正确的是多少
<gadget id="calculator">7 * 4</gadget>
<output>28</output>

<gadget id="calculator">560 / 28</gadget>
<output>20</output>

<result>20</result>