A coat is priced at 200 yuan, and now there is a 20% discount. How much is the current price?
一件上衣售价200元，现八折优惠，现在售价多少元？
<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>