A pair of sports shoes is sold at a 30% discount, which is 25.5 yuan cheaper than before. How much is the original price of these sneakers?
一双运动鞋打7折出售，比原来便宜25.5元．这双运动鞋的原价是多少元？
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">1 - (7/10)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">25.5 / (3/10)</gadget>
<output>85</output>

<result>85</result>