Can anyone calculate my wage for this month?

[changednamefort]

Term time Midday supervisor job
Annual 4200
I started this month on 16th
12.5 hours a week
Can you tell me how much I should be paid this month

IF you get 4 weeks paid a year, and so are on 42 weeks pay, you earn 8£/h.
IF you are paid until the end of the month, you have worked 12 days, at 2.5 hrs a day.
That's £240, IF no deductions - if this is your only job, there may well not be deductions. I dont know about pension..

If you dont get paid holiday, so are only 38 weeks per year, it goes up slightly.
Lots of assumptions in that tho.