A LCD TV costs 6,000 yuan, if it is sold at a 25% discount, how much is the discount?
一台液晶电视6000元，若打七五折出售，可优惠多少元？
<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">6_000 * (3/4)</gadget>
<output>4_500</output>

<gadget id="calculator">6_000 - 4_500</gadget>
<output>1_500</output>

<result>1_500</result>