The planned output value of a factory this year is 1.2 million yuan, an increase of (1/5) compared with last year's output value. How much was the output value last year?
某工厂今年计划产值是120万元，比去年的产值增加(1/5)，去年产值是多少万元？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

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

<result>100</result>