Mingming supermarket is 2 yuan per box of milk. Now it is launching a promotional activity. Each box is 0.20 yuan cheaper. How much should I pay for a box (24 boxes) of milk?
明明超市每盒牛奶2元，现开展促销活动，每盒便宜0.20元，买一箱(24盒)牛奶应付多少钱？
<gadget id="calculator">2 - 0.2</gadget>
<output>1.8</output>

<gadget id="calculator">1.8 * 24</gadget>
<output>43.2</output>

<result>43.2</result>