I'm looking for a website or something like that which helps me find the exact value of a decimal value of a number. Of course, we cannot determine the exact value from a decimal as it is finite, but for example if I type in $1.414...$, it should me all probable forms which I am looking for, one would simply be it's rational form, one could be $\sqrt{2}$ and many others... and we can get our exact form by typing in more digits. I believe such a thing would be possible because I have seen something like that in past, but now I have forgotten what was it. Another example would be if I type $1.155727349...$, it shows me $\dfrac{\pi}{e}$.
More simply put, is there any way in which I can get to the exact value of a number from it's decimal value if I know which constants would be appearing in it?
Thank you!
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