The original price of a coat is 300 yuan, and it is now on sale at a 20% discount. The current price is much cheaper than the original price. Green Garden Primary and Secondary Schools.
一件上衣原价300元，现打八折销售，现价比原价便宜了多少元．绿色圃中小学．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">300 * (1/5)</gadget>
<output>60</output>

<result>60</result>