There are 35 people in Class A and B, and 45 people in Class B and C. Class A belongs to Class C (3/5). How many people are in Class C?
甲乙班共35人，乙丙班共45人，甲班是丙班的(3/5)，丙班多少人？
<gadget id="calculator">35 * 5</gadget>
<output>175</output>

<gadget id="calculator">45 * 3</gadget>
<output>135</output>

<gadget id="calculator">175 - 135</gadget>
<output>40</output>

<gadget id="calculator">5 - 3</gadget>
<output>2</output>

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

<gadget id="calculator">45 - 20</gadget>
<output>25</output>

<result>25</result>