I continued to do arithmetic with my father, passing proudly through fractions to decimals. I eventually arrived at the point where so many cowsate so much grass, and tanks filled with water in so many hours I found it quite enthralling.

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I continued to do arithmetic with my father, passing proudly through fractions to decimals. I eventually arrived at the point where so many cowsate so much grass, and tanks filled with water in so many hours I found it quite enthralling.

— Agatha Christie ‧ An Autobiography