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  1. or download this
    S Exponent        Mantissa
- -------- -----------------------
1 10000010 01000011001100110011010
- 130 => 3 (1/1) + 0/2 + 1/4 + 0/8 + 1/16 + 1/32 + ... ~ 1.26250004768
+37158
  2. or download this
    use Math::Round;
printf "%s == %s\n", nearest(0.01, 7.525), 
                     nearest(0.01, 6.02 * 1.25); # 7.53 == 7.53