gistfile1.rb

def split(value, set)
  split_value = set.collect {|s| value.split(s) }.delete_if {|arr| arr.count == 1}
  split_value.empty? ? [value] : split_value.first
end

values = split('lot 12, 15', ['-','/',','])
street_number = values.first
street_number_to = values.last