A bicycle, originally priced at 300 yuan, is now on sale at a 20% discount. How much does it cost to buy this car now?
一辆自行车，原价300元，现打八折出售．现在买这辆车要多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">300 * (4/5)</gadget>
<output>240</output>

<result>240</result>