Aunt Zhang likes to mix fresh milk and fruit juice with a ratio of 2:3 to make a nutritious drink for breakfast every day. To make 400ml of such a nutritious drink, how many milliliters of fresh milk is needed?
张阿姨每天早餐喜欢用鲜牛奶好果汁按2：3配制成一种营养饮料来喝，要配制成这样的营养饮料400毫升，需要鲜牛奶多少毫升？
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">400 * (2/5)</gadget>
<output>160</output>

<result>160</result>