The original price of a certain product is 270 yuan per set. After the 20% discount, how much is each set?
某商品原价每套270元，现打八折优惠后，每套多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">270 * (4/5)</gadget>
<output>216</output>

<result>216</result>