There is a kind of spring and autumn quilt in the supermarket. The current price is 320 yuan per piece, which is 1/5 lower than the original price. How much is the original price per piece?
超市有一种春秋被，每条现价320元，比原价降低了(1/5)，原价每条多少元？
<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">320 / (4/5)</gadget>
<output>400</output>

<result>400</result>