Furlough questions x2

Jamesh010

I return back to work this Saturday but still am currently on Furlough. I therefore was  wondering whether there is a calculator to work out the difference in terms of what the government will pay me and my employer. (Am aware that the cost is split between gov and employer and based on hours worked) I basically believe can get more money! 

Second question of which I have not seen, is whether there is a system in place that tells the government about how many hours an employee on Furlough works?

Basically I feel that as an employee my employer will try and scam the government system by using me on 'Furlough work' but not telling them how many hours I'm working and therefore not having to pay for my work.

Any answers welcome!
Thanks. 

pleasedelete

If it is flexible furlough you can look up how it has to be calculated- this differs from furlough so far which used days in the month rather than working days. 
https://www.gov.uk/guidance/steps-to-take-before-calculating-your-claim-using-the-coronavirus-job-retention-scheme#usual-hours