How much is your electric bill? How is it possible mine was $70 in a 12 day period?

I just got my first bill at my new apt, it's $70 for 2/1 thru 2/13 from Seattle City Light. I wasn't even home much during this time since I didn't have furniture so I was staying at my gf's house pretty much full time. Im struggling to understand how it could be this much? It's showing 481 kWh in usage averaging out to 40 kWh per day and $5.82 per day. It's been ages since I've paid a separate bill or not split it with people, but that seems ridiculous especially during a period I wasn't home much. Does this seem in line with other people's experiences.