The ratio of the number of students in Class A and Class B is 5:4. If 2 students are transferred from Class B, then the number of students in Class A will be more than Class B (1/3). How many students are there in Class B now?
甲、乙两班学生人数的比是5：4，如果从乙班转走2名学生，那么甲班人数就比乙班多(1/3)，现在乙班有学生多少人？
<gadget id="calculator">1 + 3</gadget>
<output>4</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(4/5) - (3/4)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">2 / (1/20)</gadget>
<output>40</output>

<gadget id="calculator">40 * (4/5)</gadget>
<output>32</output>

<gadget id="calculator">32 - 2</gadget>
<output>30</output>

<result>30</result>