If you cannot afford Solidworks 2016 Premium, there are several alternatives you can consider:
A cracked version of Solidworks 2016 Premium is a pirated copy of the software that has been modified to bypass the licensing and activation process. This allows users to download and install the software without paying for a legitimate license.
There are several ways to obtain SolidWorks officially, often at a reduced cost or for free depending on your situation: SOLIDWORKS for Students: 3D CAD Software for Education