There are 560 boys in Zhongshan Road Primary School, and there are 1/8 fewer girls than boys. How many girls are there?
中山路小学有男生560人，女生比男生少(1/8)，女生有多少人？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 - (1/8)</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">560 * (7/8)</gadget>
<output>490</output>

<result>490</result>