I encoded all the phone numbers and addresses that were connected to drugs or prostitution. For example, Heinz lived on Forest Street. So I drew some trees in my notebook. House number and phone number I converted to currency figures. The phone number 395-4773 I wrote out as: 3.95 marks plus 47 pfennigs plus 73 pfennigs. And then I also worked out the answer like a good girl. So I hadn't totally abandoned math in the end.
