How long does it take to format a 5TB drive? [ANSWERED]

Question: How long does it take to fully format a 5TB external hard drive via USB 3.0? Answer: It takes about 9.5 hours to fully format! Details: This was an external “Seagate Expansion Unit” 5TB drive connected via USB 3.0 to a docked Dell E5450. I started the format (NTFS format, via Windows 10) at 9:30AM and it finished at 7PM.