Lenovo Group produces 40,000 desktop computers this year, which is (1/5) less than last year. How many computers were produced last year?
联想集团今年生产台式电脑40000台，比去年少生产(1/5)．去年生产多少台电脑？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">40_000 / (4/5)</gadget>
<output>50_000</output>

<result>50_000</result>