There are 24 boys in the mathematics interest group of Canal Primary School, which is 4 more than the number of girls (4/5). How many girls are there in the mathematics interest group?
运河小学数学兴趣小组有男生24人，比女生人数的(4/5)多4人，数学兴趣小组有女生多少人？
<gadget id="calculator">24 - 4</gadget>
<output>20</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">20 / (4/5)</gadget>
<output>25</output>

<result>25</result>