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  1. or download this
     
 DB<65> $num1 = '0019.90'; $num2 = '019.9'

...
1

 DB<68>
  2. or download this
      DB<109> printf "%.20f\n",$_ for $a,$b
2547200.00000000000000000000
...
  DB<112> p "$a" == "$b"                         # preferred variant
1