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kensy11Flag for Belgium

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Simplify fractions , Mathematica

Hello,

How can Simplify fraction  in Mathematica

for example this large number

31563960367552936108301021855171511091869192865677121/
157819801837764680385589599609375000000000000000000000

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is
 0.2

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but when i try in Mathematica

31563960367552936108301021855171511091869192865677121 / 
157819801837764680385589599609375000000000000000000000

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i don't get 0.2 it shows just the same numbers :(


Thank you
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phoffric

I plugged your numbers in and got about 0.2:User generated imageThey show you the exact result as a fraction since to get an exact decimal representation would take too many places to show (or it may be a repeating decimal).
Your OP that says that the answer is 0.2 cannot be true since 0.2 is 1/5.
If you multiply the numerator by 5, then you should get exactly the denominator if the answer is 0.2. But that cannot be since 5*(...7121) ends in a 5. For 0.2 to be the answer, you would expect that the multiplication would end in many 0's.
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ASKER

phoffric   How did you do it ?? did you use Mathematica program or on the web ?


im using Mathematica 8.0

And as it been shown in your image i get the second step , (the same numbers ) i don't know how to get the decimal approximation as in your image
ASKER CERTIFIED SOLUTION
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phoffric

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