A pair of sneakers was newly launched because it was a new model, so it was sold at a 30% price increase. After half a year, it became an old model and was only sold at a 25% discount. The current price is 90 yuan. What was the initial price of this pair of sneakers? ?
一双旅游鞋，刚上市是由于是新款，因此加价30%销售，半年后成为老款，只打七五折销售，现在的售价是90元，这双旅游鞋最开始的售价是多少元？
<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

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

<result>120</result>