The original ratio of the number of people in teams A and B is 7:3. After transferring some people from team A to team B, the ratio of the number of people in teams A and B is 3:2. Team B has 120 people. How many people in team B? ?
甲、乙两队原有人数比是7：3，从甲队调一些人到乙队后，甲、乙两队人数比是3：2，乙队现有120人，乙队原有多少人？
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">120 / (2/5)</gadget>
<output>300</output>

<gadget id="calculator">7 + 3</gadget>
<output>10</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">300 * (3/10)</gadget>
<output>90</output>

<result>90</result>