def round_to_closest_multiple(number, closest_multiple_of)
   
   float =  number / closest_multiple_of
   float_array = float.to_s.split(".")
   closest_multiple = float_array[0].to_i * closest_multiple_of
   roundable = number - closest_multiple
   if roundable >= ((closest_multiple_of/1.0)/2)
     rounded_number = closest_multiple + closest_multiple_of
   else
     rounded_number = closest_multiple
   end
   return rounded_number
  end