text: class Base:
      name = ''
      symbol = ''
      factor = 1
  
  
  class Yotta( Base ):
      name = 'yotta'
      symbol = 'Y'
      factor = 10 ** 24
  
  
  class Zetta( Base ):
      name = 'zetta'
      symbol = 'Z'
      factor = 10 ** 21
  
  
  class Exa( Base ):
      name = 'exa'
      symbol = 'E'
      factor = 10 ** 18
  
  
  class Peta( Base ):
      name = 'peta'
      symbol = 'P'
      factor = 10 ** 15
  
  
  class Tera( Base ):
      name = 'tera'
      symbol = 'T'
      factor = 10 ** 12
  
  
  class Giga( Base ):
      name = 'giga'
      symbol = 'G'
      factor = 10 ** 9
  
  
  class Mega( Base ):
      name = 'mega'
      symbol = 'M'
      factor = 10 ** 6
  
  
  class Kilo( Base ):
      name = 'kilo'
      symbol = 'k'
      factor = 10 ** 3
  
  
  class Hecto( Base ):
      name = 'hecto'
      symbol = 'h'
      factor = 10 ** 2
  
  
  class Deca( Base ):
      name = 'deca'
      symbol = 'da'
      factor = 10 ** 1
  
  
  class Centi( Base ):
      name = 'Centi'
      symbol = 'c'
      factor = 10 ** -2
  
  
  class Mili( Base ):
      name = 'mili'
      symbol = 'm'
      factor = 10 ** -3
  
  
  class Micro( Base ):
      name = 'micro'
      symbol = 'μ'
      factor = 10 ** -6
  
  
  class Nano( Base ):
      name = 'nano'
      symbol = 'n'
      factor = 10 ** -9
  
  
  class Pico( Base ):
      name = 'pico'
      symbol = 'p'
      factor = 10 ** -12
  
  
  class Femto( Base ):
      name = 'femto'
      symbol = 'f'
      factor = 10 ** -15
  
  
  class Atto( Base ):
      name = 'Atto'
      symbol = 'a'
      factor = 10 ** -18
  
  
  class Zepto( Base ):
      name = 'zepto'
      symbol = 'z'
      factor = 10 ** -21
  
  
  class Yocto( Base ):
      name = 'yocto'
      symbol = 'y'
      factor = 10 ** -24
  