A bottle of 540ml pure water can fill 3 cups, and Tingting needs to drink about 5 cups of this kind of water a day. About how many milliliters of water does Tingting drink a day?
一瓶540毫升的纯净水可以倒满3杯，婷婷一天大约要喝这样的5杯水．婷婷一天大约喝多少毫升水？
<gadget id="calculator">540 / 3</gadget>
<output>180</output>

<gadget id="calculator">180 * 5</gadget>
<output>900</output>

<result>900</result>