Dear sir, I know how important is any job that an employer creates and I'm sure I can satisfy your requirements. I have worked with excel since 2010, so I have a large experience with it(I won't talk more about my experience because this is basic in excel). About accuracy, you don't have to worry, I will do those entries manually, so it will be over 99%, after I will introduce all the data, I will check them one more time just to be sure. Since there are several hundreds of entries, my necessary time for finishing my job is 20 days(I might deliver them faster, but I want to be sure, I have to expect the unexpected). Best wishes, Alec.