The challenge is that the result of the computation is a bit smaller than 2047, but only such a little bit that even the truncated value in the long format looks as if it was 2047. This boils down to:
format long
x1 = 204.7 / 0.1
x2 = 204.7 * 10
fprintf("x1 = %.16f\n", x1)
fprintf("x2 = %.16f\n", x2)
In other words, the calculation is correct up to a minor numerical error. The mean thing is that the discrepancy is so small that even with format long the only indication that x1 is not exactly 2047 is the large number of zeros.
I would not blame MATLAB or Simulink for this, but rather that computers use the binary system, and 0.1 does not have a finite representation in the binary system. It's a bit like 1/3 in the decimal system: the more digits you add, the more accurate it gets, but it never becomes exact.
Hope this helps. :)
