Boys accounted for (6/11) of Class 61 last semester. After transferring 4 girls this semester, boys accounted for only (1/2). How many girls are there in this class now?
六一班上学期男生占(6/11)，这学期转进4名女生后男生就只占(1/2)了，问这个班现在有女生多少人．
<gadget id="calculator">11 - 6</gadget>
<output>5</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 - (5/6)</gadget>
<output>1/6 = around 0.166667</output>

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

<result>24</result>