A pair of sneakers is 130 yuan, sold at 25% off, how much can you save?
一双球鞋130元，按七五折出售，可以省多少元．
<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">130 * (3/4)</gadget>
<output>195/2 = around 97.5</output>

<gadget id="calculator">130 - (195/2)</gadget>
<output>65/2 = around 32.5</output>

<result>65/2 = around 32.5</result>