The football price is 69 yuan, which is 15% more expensive than the basketball. How much is the price of basketball? How much is the following formula correct?
足球价格69元，比篮球贵15%．篮球价格是多少元？下面列式对的是多少
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 + (3/20)</gadget>
<output>23/20 = around 1.15</output>

<gadget id="calculator">69 / (23/20)</gadget>
<output>60</output>

<result>60</result>