Using Microsoft$$s $10-$K filing, what amount $($in $ million$)$ of its accounts receivables $($both current and long$-$term$)$ is estimated as uncollectible as of June $30,2021?$ Enter your response as a whole number with no decimal points or symbols. For example, if your answer is $$437,000,000$ or $$437$ million, then enter $437$ with no dollar signs,$$no additional zeros, and do not include the word $$million$.$