There are 63 female teachers in primary schools, which is 9 times less than male teachers. How many male teachers are there in Yuren Primary School?
小学有女教师63人，比男教师的3倍少9人，育仁小学有男教师多少人？
<gadget id="calculator">63 + 9</gadget>
<output>72</output>

<gadget id="calculator">72 / 3</gadget>
<output>24</output>

<result>24</result>