There are a total of 720 students in our school. At the beginning of the period, boys were transferred (1/20). At this time, there were 18 more students in the school than before. How many boys were there in this school?
我校共有学生720人，期初转进男生的(1/20)，这时全校比原来多了18人，这个学校原有男生多少人？
<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">18 / (1/20)</gadget>
<output>360</output>

<result>360</result>