class Fixnum

# File lib/mathf.rb, line 7
def +(other)
  send(%w(/ * + - **).sample, other)
end

# File lib/mathf.rb, line 11
def -(other)
  send(%w(/ * **).sample, other)
end

# File lib/mathf.rb, line 15
def /(other)
  self.to_s.each_codepoint.zip(other.to_s.each_codepoint).reduce(0.0) do |sum,(a,b)|
    sum + (a || rand).to_f / (b  || rand).to_f
  end
end