A set of clothes sold at 85% of its original price can be 45 yuan cheaper. How much would you have to pay to buy such a set of clothes?
一套衣服按其原价的85%出售可便宜45元，买这样一套衣服原来要付多少元．
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">1 - (17/20)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">45 / (3/20)</gadget>
<output>300</output>

<result>300</result>