The underlying problem is likely to be the distinction between weekly and monthly funds
e.g. Your rent is £116.66, but why do you want a monthly figure ? Is that due to your income frequency meaning that you pay on a monthly basis and therefore need to pay an appropriate amount ?
What happens if you over or under pay?
Do you just have a credit / debit balance or do you get red letters if in debit?
Peace of mind would be able to overpay with the lowest common denominator (days)
£116.66 / 7 x 365.25 / 12. =£507.26 per month
£507.26 per month sits at £6087.12 which is between £6066.32 and £6182.98 for 52 or 53 weeks
There are varying numbers of weeks and days per year, but a fixed number of months (with varying days per month and a leap year adjustment, so I’ve added a quarter day)
You could pay on a 4 weekly basis, but will have months that you make two payments
You could pay a proportioned amount which will over or under pay at any given time
Ot you could pay one of the lower figures on a routine monthly basis along with a diary reminder to pay an extra amount as well (if you are on a standing order then you could pay a fixed amount each month plus a top up which you pay manually or work out a more complex frequency such as quarterly or annually - it’s probably easier to pay a monthly amount that over or underpays and adjust as required at a later date)