please explain every step

Five jobs are to be done at custom furniture shop with the following information: Flow time Lateness 1. Please fill the columns for Flow time and lateness 2. Calculate \"average completion\" time based on total flow times for all jobs 3. Calculate \"average number of jobs" in the system. 4. What is the average lateness 5. What is the utilization for these jobs You can solve this problem manually, or by using an Excel spreadsheet