There are 120 workers in the first workshop, the number of workers in the second workshop is (5/6) that of the first workshop, and the number of workers in the two workshops is exactly (2/5) the number of workers in the whole factory. How many workers are there in the whole factory?
第一车间有工人120人，第二车间的工人数是第一车间的(5/6)，两个车间的工人数正好是全厂人数的(2/5)，问全厂有多少工人？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">120 * (5/6)</gadget>
<output>100</output>

<gadget id="calculator">120 + 100</gadget>
<output>220</output>

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

<gadget id="calculator">220 / (2/5)</gadget>
<output>550</output>

<result>550</result>