Yep, you probably don't need the number of complete rotations that 1000/ 360 would give you. (2)
% or modulus gives you the remainder of 1000/360.(.77777777)
But keep in mind that's in addition to current angle.
If you do need the number of rotations, and a method to implement them without the 0/360 reset, Lucid's math plug with anglerp() will also work nice.