1 sec = 1000 ms
1 min = 60 sec = 60000 ms
1 hour = 60 min = 3600 sec = 36000000 ms
1day = 24 hours = 1440 min = 86400 sec = 86400000 ms

3555 days = 3,07152e+11 ms

3,07152e+11 < real maximum 3,402823e+38  >>> for calculations you need operations with real values

AutoGen_3027862

1 sec = 1000 ms
1 min = 60 sec = 60000 ms
1 hour = 60 min = 3600 sec = 36000000 ms
1day = 24 hours = 1440 min = 86400 sec = 86400000 ms

3555 days = 3,07152e+11 ms

3,07152e+11 < real maximum 3,402823e+38  >>> for calculations you need operations with real values

You are making a bad suggestion to a very old topic.
It is important that you understand the nature of REAL numbers to understand the why. Simply - a REAL number is an approximation which do not represent all possible numbers.

See the attached for a simple demonstration.