$count = 895.3; while ($count <= 900) { $count += 0.01; print "$count\n"; } The output: 895.31 895.32 895.33 895.34 895.35 895.36 895.37 895.38 895.39 895.4 895.41 895.42 895.43 895.44 895.45 895.46 895.47 895.48 895.49 895.5 895.51 895.52 895.53 895.54 895.55 895.56 895.57 895.58 895.59 895.6 895.61 895.62 895.63 895.64 895.65 895.66 895.67 895.68 895.69 895.7 895.71 895.72 895.73 895.74 895.75 895.76 895.77 895.78 895.79 895.8 895.809999999999 895.819999999999 895.829999999999 895.839999999999 895.849999999999 895.859999999999 895.869999999999 895.879999999999 895.889999999999 895.899999999999 895.909999999999 895.919999999999 895.929999999999 895.939999999999 895.949999999999 895.959999999999 895.969999999999