A product is first priced at a 20% profit margin, and then sold at a 30% discount, resulting in a loss of 160 yuan. What is the cost of this product?
一种商品先按20%的利润率定价，然后又打7折出售，结果亏损了160元，这种商品的成本是多少元．
<gadget id="calculator">20 / 100</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">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">(6/5) * (7/10)</gadget>
<output>21/25 = around 0.84</output>

<gadget id="calculator">1 - (21/25)</gadget>
<output>4/25 = around 0.16</output>

<gadget id="calculator">160 / (4/25)</gadget>
<output>1_000</output>

<result>1_000</result>