There are a total of 100 people in classes A and B. From class A to class B (1/6), the number of people in class B has increased (1/4) from the original. How many people are there in class A?
甲、乙两班一共有100人，从甲班调(1/6)到乙班，乙班的人数比原来增加了(1/4)，原来甲班有多少人？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">100 * (1/4)</gadget>
<output>25</output>

<gadget id="calculator">25 - 100</gadget>
<output>-75</output>

<gadget id="calculator">100 + (-75)</gadget>
<output>25</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/4) - 1</gadget>
<output>-3/4 = around -0.75</output>

<gadget id="calculator">(1/6) + 1 + (-3/4)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">25 / (5/12)</gadget>
<output>60</output>

<result>60</result>