The number of girls in the chorus team of a school accounts for 45% of the total number, which is 12 fewer than the boys. How many people are there in the chorus team?
某校合唱队女生人数占总人数的45%，比男生少12人，合唱队共有多少人？
<gadget id="calculator">45 / 100</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">1 - (9/20) - (9/20)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">12 / (1/10)</gadget>
<output>120</output>

<result>120</result>