How much money do the Ndrangheta mafia make?
The \u2018Ndrangheta are one of Italy\u2019s biggest and most dangerous criminal gangs. One piece of research suggested they have an annual turnover of \u20ac53bn - more than McDonalds and Deutsche Bank combined.
But is that number realistic? Professor Anna Sergi and Professor Francesco Calderoni help us figure out what kind of number makes sense.
Reporter: Perisha Kudhail\nSeries producer: Tom Colls\nSound mix: Neil Churchill\nEditor: Richard Vadon
(Picture: Human hands with strings controlling diagram.\nCredit: Boris Zhitkov/Getty Images)