how to get value without e?

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We can control how many decimal digits to print with formatted floating point output - for example, here we get 50 decimal digits:

sage: t = 1/664613997892457936451903530140172288                                                                                                                                                                                                              
sage: print('%.50f' % t )                                                                                                                                                                                                                                     
0.00000000000000000000000000000000000150463276905253