There are 20 boys in the art class, all of whom belong to girls (5/6), and the myopic girls belong to girls (1/6). How many myopic girls are there?
美术班有男生20人，是女生的(5/6)，近视的女生是女生的(1/6)，近视的女生有多少人？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">20 / (5/6)</gadget>
<output>24</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">24 * (1/6)</gadget>
<output>4</output>

<result>4</result>