A bottle of milk has 3 liters. Xiaoli drinks 200ml every day for 12 days. How many ml is left in this bottle of milk?
一瓶牛奶有3升，小丽每天喝200毫升，喝了12天，这瓶牛奶还剩多少毫升？
<gadget id="calculator">3 * 1_000</gadget>
<output>3_000</output>

<gadget id="calculator">200 * 12</gadget>
<output>2_400</output>

<gadget id="calculator">3_000 - 2_400</gadget>
<output>600</output>

<result>600</result>