multiplying integer to decimal

[Ofnuts]

So you are saying that every time I have to do any mathematical work on python I have to import the decimal library and convert each number into decimal....that might get tedious for large programming

No. Everyone (Python, Fortran, C, C#...) uses floating point, this is how rockets are sent to Saturn. Of course you have to learn to live with its idiosyncrasies. The cases where you want infinite precision are fairly rare (mostly when dealing with money).