There are 70 fewer girls than boys in a certain school, exactly 10% less, how many girls are there in this school?
某校女生比男生少70人，正好少10%，该校女生有多少人？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">70 / (1/10)</gadget>
<output>700</output>

<gadget id="calculator">700 - 70</gadget>
<output>630</output>

<result>630</result>