The three bottles A, B, and C contain 100, 200, and 300 grams of water respectively. Pour 100 grams of alcohol solution into bottle A and mix it, then take out 100 grams and pour it into bottle B, then mix 100 grams and pour it into bottle C. Finally, C The alcohol content of the bottle is 2, 5%, what is the alcohol content of the alcohol solution initially poured into bottle A
A，B，C三个瓶子分别盛有100，200，300克水，把100克酒精溶液倒入A瓶中混合后取出100克倒入B瓶，再混合100克倒入c瓶，最后C瓶酒精含量为2，5%则最初倒入A瓶的酒精溶液的酒精含量是多少
<gadget id="calculator">100 + 100</gadget>
<output>200</output>

<gadget id="calculator">200 + 100</gadget>
<output>300</output>

<gadget id="calculator">300 + 100</gadget>
<output>400</output>

<gadget id="calculator">2.5 / 100</gadget>
<output>0.025</output>

<gadget id="calculator">0.025 / 100</gadget>
<output>0.00025</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">400 * 0.00025 * 1</gadget>
<output>0.1</output>

<gadget id="calculator">0.1 / 100</gadget>
<output>0.001</output>

<gadget id="calculator">300 * 0.001 * 1</gadget>
<output>0.3</output>

<gadget id="calculator">0.3 / 100</gadget>
<output>0.003</output>

<gadget id="calculator">200 * 0.003</gadget>
<output>0.6</output>

<result>0.6</result>