Fortran version needs Rate print fix

When `n` is huge, we need to not compute the total bytes in `INTEGER` precision, when it's the default of 32 bits.  The fix is trivial:

```patch
-          WRITE (*,FMT=9050) label(j),n*bytes(j)*nbpw/mintime(j)/1.0D6,
+          WRITE (*,FMT=9050) label(j),n/1.0D6*bytes(j)*nbpw/mintime(j),
```