There are a total of 150 people in the two workshops. If 50 people are transferred from other places to the first workshop, the number of people in the first workshop is 2/3 of that of the second workshop. How many people were there in the first workshop?
两个车间共有150人，如果从外地调入50人到第一车间，这时一车间的人数是二车间的(2/3)，一车间原来有多少人？
<gadget id="calculator">150 + 50</gadget>
<output>200</output>

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

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

<gadget id="calculator">200 * (2/5)</gadget>
<output>80</output>

<gadget id="calculator">80 - 50</gadget>
<output>30</output>

<result>30</result>