The original price of a product is 250 yuan, and now it is sold at a 25% discount. How much is it cheaper to buy this product now than before?
一件商品原价250元，现在打七五折出售，现在买这件商品，比原来便宜多少元．
<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">250 * (1/4)</gadget>
<output>125/2 = around 62.5</output>

<result>125/2 = around 62.5</result>