French translation without google translate?

How do you say





Thank you for letting me know (use Vous), I'll make sure to take it on monday.





please don't use google translate or babelfish or any other internet translators...





thanks in advance!|||"Merci de me le faire savoir. Je m'assurerai de le/la prendre lundi."


or


"Merci de me le faire savoir. Je m'assurerai de ne pas oublier de le/la prendre lundi."





Depending on what "it" is supposed to be, we should translate "it" as either "le" or "la". In French, we have two genders (masculine and feminine), and I need to know what the object you have to take on Monday is in order to give you an exact translation. For now, I wrote "le/la", but we need to pick only one of the two.