Workers in a binding workshop want to pack a batch of books and send them to the post office. The number of books packed in each pack is the same. The first time they received this batch of books (7/20), they packed 14 packs There were 35 more books, and the second time they took all the remaining books, together with the extra change from the first time, they just made another 27 packs, so how many books are there in this batch?
某装订车间的工人要将一批书打包后送往邮局，每包中所包装书的数目一样多，第一次，他们领来这批书的(7/20)，结果打了14个包还多35本，第二次他们把剩下的书全部取来，连同第一次多出的零头一起，刚好又打了27包，那么这批书共有多少本？
<gadget id="calculator">7 / 20</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">14 + 27</gadget>
<output>41</output>

<gadget id="calculator">14 / 41</gadget>
<output>14/41 = around 0.341463</output>

<gadget id="calculator">(7/20) - (14/41)</gadget>
<output>7/820 = around 0.008537</output>

<gadget id="calculator">35 / (7/820)</gadget>
<output>4_100</output>

<result>4_100</result>