The original price of a walkman is 120 yuan, and it is sold at a 25% discount. What is the selling price?
一个随身听原价是120元，按七五折出售，售价是多少元．
<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">120 * (3/4)</gadget>
<output>90</output>

<result>90</result>