Rota - calculate the hours every one has done each week

Hi everyone.

I'm not very useful with Excel but I've just finished doing my staff rota and was wondering if there is an easy way to calculate the hours every one has done each week to make sure everyone has done the correct hours. I was about to start using a calculator and then realised it would take forever, lol.

I've included a zip file of the excel file and I would REALLY appreciate it if anyone could take a look at it and advise me.

Thanks very much.