After each of the 6 children gets 12 exercise books, there are 5 exercise books left. How many exercise books are there in total?
6个小朋友每人分得12个练习本后，还剩5个练习本，练习本一共有多少本．
<gadget id="calculator">12 * 6</gadget>
<output>72</output>

<gadget id="calculator">72 + 5</gadget>
<output>77</output>

<result>77</result>