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  1. or download this
    printf "%.20f => %.2f\n", 1.025, 1.025;
  2. or download this
    # this prints
1.02499999999999990000 => 1.02
  3. or download this
    printf "%.20f => %.0f", 0.5, 0.5;

# prints
0.50000000000000000000 => 1