Xiaohua is reading a book. This book has 413 pages, 104 pages have been read, and he plans to finish it in 3 days. How many pages do you read on average per day?
小华看一本书，这本书共413页，已经看了104页，余下打算3天看完．平均每天要看多少页？
<gadget id="calculator">413 - 104</gadget>
<output>309</output>

<gadget id="calculator">309 / 3</gadget>
<output>103</output>

<result>103</result>