A batch of exercise books is distributed to 8 children or 6 children on average and there are 3 books left. What is the minimum number of exercise books in this batch?
一批练习本，平均分发给8个小朋友或6个小朋友都余3本，这批练习本至少有多少本本．
<gadget id="calculator">24 + 3</gadget>
<output>27</output>

<result>27</result>