The ratio of the number of people in factory A and B is 5:4. After transferring 133 people from factory A to factory B, the ratio of people in factory A and B is 2:3. How many people did factory B have.
甲乙两个厂的人数之比是5：4，从甲厂调133人到乙厂后，甲乙两厂人数之比是2：3，乙厂原有多少人．
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">(3/5) - (4/9)</gadget>
<output>7/45 = around 0.155556</output>

<gadget id="calculator">133 / (7/45)</gadget>
<output>855</output>

<gadget id="calculator">855 * (4/9)</gadget>
<output>380</output>

<result>380</result>