A record of the change given

Please can we have a record of what note someone has given and the change given on the document details or even on a report. Sometimes I want to make sure my staff are putting in the correct money, they have to regardless of their maths abilities for my piece of mind. I like to see what the customer paid with, example: £10 note or sometimes if the amount is like £5.95, they will give £11 to get the £5 note plus 5p but I need to check that part of the sale sometimes as a manager. I think the below request would tie in this nicely