How old was Joan of France when Charlotte of Savoy died?

What was the age (length of time since creation) of Joan of France, briefly Queen consort of France as wife of King Louis XII of France, in between the death of her brother, and the annulment of her marriage at the time Charlotte of Savoy (11 November 1441 – 1 December 1483), the second wife and only Queen consort of Louis XI of France is someone who died on?

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Show reasoning Reasoning

I followed this chain of reasoning:

I know from locally stored knowledge that:
December 1st 1483 is the date of death of Charlotte of Savoy ([fact: ["124197320@trueknowledge.com"]])

April 23rd 1464 is the birthdate of Joan of France ([fact: ["124200865@trueknowledge.com"]])

By calculation (generator: ["human_age@trueknowledge.com"]) I know that:
Fact 1: 19 years, 7 months and 8 days old is the age of Joan of France

Fact 1 is true at December 1st 1483

By calculation (generator: ["applies_at_timepoint@trueknowledge.com"]) I know that:
Fact 1 is true at December 1483

By calculation (generator: ["human_age@trueknowledge.com"]) I know that:
Fact 1: 19 years, 7 months and 8 days old is a age

Fact 1: 19 years, 7 months and 8 days old applies to Joan of France

Fact 1 is true at December 1st 1483

By calculation (generator: ["ismoreaccurate1@trueknowledge.com"]) I know that:
December 1st 1483 is a more accurate version of December 1483

I used the following facts to provide this answer:

December 1st 1483 is the date of death of Charlotte of Savoy

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April 23rd 1464 is the birthdate of Joan of France

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