Uncle Wang decided to donate 15,000 yuan to subsidize poor college students. This money is exactly 25% of his annual income. How much is Uncle Wang's annual income?
王叔叔决定拿出15000元钱资助贫困大学生，这些钱正好是他一年收入的25%，王叔叔一年收入是多少元？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">15_000 / (1/4)</gadget>
<output>60_000</output>

<result>60_000</result>