Among the original products in a certain workshop, (1/80) are waste products. After using the new machine, the loss can be reduced (1/5). What is the current waste rate?
某车间原来的产品中，有(1/80)是废品，使用新机器后能减少损失(1/5)，现在的废品率是多少．
<gadget id="calculator">1 / 80</gadget>
<output>1/80 = around 0.0125</output>

<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">1 * (1/80) * (4/5)</gadget>
<output>1/100 = around 0.01</output>

<result>1/100 = around 0.01</result>