Kobayashi went to buy milk and found that the milk was on sale this week, buy two get one free, 1.8 yuan per bag, Xiaolin has 14.4 yuan, how many bags of milk can you buy at most?
小林去买牛奶，发现牛奶本周特价，买二送一，每袋1.8元，小林有14.4元，最多可以买几袋牛奶？
<gadget id="calculator">1.8 * 2</gadget>
<output>3.6</output>

<gadget id="calculator">14.4 / 3.6</gadget>
<output>4</output>

<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<result>12</result>