The turnover of a shopping mall in the second half of a certain month is 5 million yuan, which is (1/5) less than that in the first half month. How much is the turnover in the first half of the month?
某商场某月下半月营业额是500万元，比上半月减少了(1/5)，上半月的营业额是多少万元？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">500 / (4/5)</gadget>
<output>625</output>

<result>625</result>