Water is a precious resource. In daily life, wasting water is a very huge loss. For example, every time you brush your teeth, you don't turn off the faucet until the end of brushing your teeth. About 500ml of water will be lost every 10 seconds. Assuming that you brush your teeth twice a day and spend a total of 180 seconds, how many milliliters of water do you lose by brushing your teeth every day?
水是宝贵的资源，在生活巾，浪费水是一种十分巨大的损失．比如，你每次刷牙时，一直到刷牙结束才关闭水龙头，每10秒钟流失的水约500毫升．假设你每天刷牙两次，共花时间180秒，那么你每天刷牙流失的水约是多少毫升？
<gadget id="calculator">500 / 10</gadget>
<output>50</output>

<gadget id="calculator">50 * 180</gadget>
<output>9_000</output>

<result>9_000</result>