For a product, the original cost per piece was 80 yuan. After adopting the new technology, the cost per piece was reduced by 15%. How much does each product cost now?
一种产品，原来每件的成本是80元，采用了新工艺后，每件成本降低了15%．现在每件产品的成本是多少元？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 - (3/20)</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">80 * (17/20)</gadget>
<output>68</output>

<result>68</result>