Type A wine contains 40% pure alcohol, type B contains 36% pure alcohol, and type C contains 35% pure alcohol. Mix the three kinds of wine together to obtain 11 kg of wine with an alcohol content of 38.5%. It is known that wine B is 3 kilograms more than wine C, so how many kilograms is wine A?
甲种酒含纯酒精40%，乙种酒含纯酒精36%，丙种酒含纯酒精35%．将三种酒混在一起得到含酒精38.5%的酒11千克．已知乙种酒比丙种酒多3千克，那么甲种酒有多少千克？
<gadget id="calculator">8 * 40</gadget>
<output>320</output>

<gadget id="calculator">3 * 36</gadget>
<output>108</output>

<gadget id="calculator">108 - 423.5</gadget>
<output>-315.5</output>

<gadget id="calculator">320 + (-315.5)</gadget>
<output>4.5</output>

<gadget id="calculator">2 * 40</gadget>
<output>80</output>

<gadget id="calculator">80 - 36 - 35</gadget>
<output>9</output>

<gadget id="calculator">4.5 / 9</gadget>
<output>0.5</output>

<gadget id="calculator">2 * 0.5</gadget>
<output>1</output>

<gadget id="calculator">11 - 1 - 3</gadget>
<output>7</output>

<result>7</result>