Class six (two) has 12.5% more people than class six (one), and class six (two) has 45 people. How many people are there in class six (one) than class six (two)?
六(二)班人数比六(一)班多12.5%，六(二)班有45人，六(一)班比六(二)班少多少人？
<gadget id="calculator">12.5 / 100</gadget>
<output>0.125</output>

<gadget id="calculator">1 + 0.125</gadget>
<output>1.125</output>

<gadget id="calculator">45 / 1.125</gadget>
<output>40</output>

<gadget id="calculator">45 - 40</gadget>
<output>5</output>

<result>5</result>