There is a pile of candies, of which candy A accounts for 45% of the total. After adding 16 candies of B, candy A only accounts for 25% of the total. How many candies of type A are in this pile of candies?
有一堆糖果，其中甲糖果占总数的45%，再放入16块乙糖果后，甲种糖果只占现在总数的25%，问这堆糖果中有多块甲种糖果？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/4) / (1/4)</gadget>
<output>3</output>

<gadget id="calculator">45 / 100</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">1 - (9/20)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">(11/20) / (9/20)</gadget>
<output>11/9 = around 1.222222</output>

<gadget id="calculator">3 - (11/9)</gadget>
<output>16/9 = around 1.777778</output>

<gadget id="calculator">16 / (16/9)</gadget>
<output>9</output>

<result>9</result>