I don't know offhand how to do that on the phone (just tried but can't either), but if it's a one-off, you can do so from calendar.google.com.
Create a new event, check the Repeat box, a new window will pop up. Change the Repeats dropdown from Weekly to Daily. Change the Repeat every 1 days dropdown to 6 days. That should get you started (I didn't try saving one).
I just happened to do that very thing earlier today!
It was sent to me in an email attachment, the filename was "schedule-20150119T151044.vcs". From the email app, I downloaded the attachment. I then went to the download folder (I used ES File Explorer but the the native file explorer app should do), and clicked on the file. You may get an "Open With" dialog box, choose "Calendar". From there I pressed the "Save to Calendar" button/bar and it was now in my calendar.
I was able to import it through my Gmail account by importing it on a desktop PC.
I opted to use a 3rd party app since the stock app just lists a colored bar on the monthly calendar for each event where the third party app actually lists a text description of the events
Odd... my stock calendar app in monthly view shows the text of the event (yes, it gets cut off due to length of the text but it does show text and not coloured bars). My About for Calendar is build version 4.20.24. If yours is older than that, perhaps check your LG software updates (Settings, About Phone, Update Center, App Updates).