Find an integer $n$ such that $0\leq n<398$ and $n$ is a multiplicative inverse to 7 modulo 398.
Question:
Find an integer $n$ such that $0\leq n<398$ and $n$ is a multiplicative inverse to 7 modulo 398.
Answer:
Let's think step by step.

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Find an integer $n$ such that $0\leq n<398$ and $n$ is a multiplicative inverse to 7 modulo 398.
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