Class 6. There are 23 boys, 15% more than girls. How many girls are there?
六•一班有男生23人，比女生多15%，女生有多少人？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 + (3/20)</gadget>
<output>23/20 = around 1.15</output>

<gadget id="calculator">23 / (23/20)</gadget>
<output>20</output>

<result>20</result>