def standard_preprocess(data, column):
    """
    Small preprocessing steps, does the following:
        1. Converts column to string, for consistency
        2. Makes str to lower case
        3. Removes spaces
        4. Removes full stops 
        5. Removes commas
        
    Action: 
        Adds a new columns to the dataframe, with a 
        suffix "_processed"
        
    Returns: 
        Name of the new column. 
        
    To do: 
        1. Ensure that KvKs are int type - Fixed! 
        2. A better list of things to replace apart from 
        commas and full-stops
    """
    newname = data[column].name + '_processed'    
    data[newname] = data[column].apply(lambda x: 
        str(x).lower().replace(" ", "").replace(".", "").replace(",", "")
        if type(x) == str else x)
    return newname