Assignment:
In October, the zoo had a special week called "Halloween week". On the last day of October, they had a party where everyone wore costumes. A contest was held to choose the best black Halloween cat. Each cat wore a number. All the numbers put on the cats had one thing in common. What did the numbers have in common?
Numbers:
58 76 85 94 166 184 247 373 427 553 625 733 823 922
Provide complete and step by step solution for the question and show calculations and use formulas.