Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
@hay 你各位3.14159265359小數點後11位相加乘100哪兒來的4900？？？🤔你們數學可還好
