The prices of rainbow hats in stores A and B are the same. Store A sells rainbow hats at the fixed price, and the sales amount is 7,200 yuan; Store B sells them at 20% off the price, which is 15 more than Store A, and the sales amount is the same as Store A. So, how much is the price of this rainbow hat?
A、B两个商店里的彩虹帽的定价相同．A商店按定价销售彩虹帽，销售额是7200元；B商店按定价的八折出售，比A商店多销售15件，销售额与A商店相同．那么，这种彩虹帽的定价是多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">7_200 * (4/5)</gadget>
<output>5_760</output>

<gadget id="calculator">7_200 - 5_760</gadget>
<output>1_440</output>

<gadget id="calculator">1_440 / 15 / (4/5)</gadget>
<output>120</output>

<result>120</result>