The original price of a coat is 200 yuan, and it is sold at a 20% discount. What is the current price?
一件上衣原价200元，打八折出售，现价多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">200 * (4/5)</gadget>
<output>160</output>

<result>160</result>