Second power of 1998-2001 times 1999

Second power of 1998-2001 times 1999

-7995

What is the power of (-0.25) to the power of 2001*4 to the power of 2001+(-1) to the power of 2002+(-1) to the power of 2003?

Original formula
2001 Power of =(-0.25×4)+1-1
2001 Power of =(-1)+1-1
=-1+1-1
=-1