The number of boys in class 6 and 3 is the number of girls (4/5), the number of girls is 5 more than boys, how many boys are there?
六3班男生人数是女生人数的(4/5)，女生人数比男生多5人，男生有多少人．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">5 / (1/5)</gadget>
<output>25</output>

<gadget id="calculator">25 - 5</gadget>
<output>20</output>

<result>20</result>