title: Is there way to modify Number class
body: <p>At clasic windows calculator, nubers are separated by comma, like: 4,5
  I wish to have it same in flash, but:</p>
  
  <p>Number("4,5") //output: NaN</p>
  
  <p>Is there any way modify Number class to get this result?</p>
  
  <p>Number("4,5") //output: 4.5
  Number("4.5") //output: 4.5</p>
  
  <p>Also string with spaces can be considered as number...</p>
  
  <p>trace(Number("10000" )) //output: 10000
  trace(Number("10 000")) //output: NaN</p>
  
  <p>one more example about numbers which can be fixed:</p>
  
  <p>trace(4.3 - 1.1) //output 3.1999999999999997
  trace(Number(4.3 - 1.1).toFixed(1)) //output: 3.2 </p>