The Holy See's chief exorcist, Father Gabriele Amorth, charmed geotechnical engineer Bob Felton to take up his calculator. Because Amorth's lifetime achievement numbers are so impressive. According to Richard Owen of the Irish Independent:
Father Gabriele Amorth said the Pope "fully believes in liberation from evil, because the Devil lodges in the Vatican. Naturally it is difficult to find proof, but you can see the consequences". Fr Amorth (85) has been the Vatican's chief exorcist for 25 years and says he has dealt with 70,000 cases of demonic possession.
Felton began his analysis as follows:
Father Amorth is 85-years old. If we assume he was a prodigy and began his exorcism career at a mere 25-years old, and that he kept a workmanlike pace for 60-years — no ramp-up as he mastered his skills — and worked 6-days a week (resting on Sunday, though Satan doesn’t) without vacations, then …
60-years x 365-days/year x 6/7 = 18,772 days vanquishing demons