ohkaydokay this is simple.
You need 13,000,000 xp for 99
There are 14 days in two weeks ( 24x14= 336)
Now take 45,000 and divide it into 13,000,000 ( about 289)
So the fraction would be 289/336 or 86%
So you need to run the bot 289 hours (or 86% of the trial time) @ 45k an hour.