how much money every month would you make for $400.00 every week?

OR

you could say that there are 52 weeks in a year 

so in a year you would earn 400*52= $20800

then there are 12 months in a year 20800/12= $1733.33 per month

Generally it is accepted that there are four weeks in a month. If you make four hundred dollars a week and there are four weeks in a month; you will be making four hundred dollars four times a month. So you can add 400+400+400+400 or just multiply 400 by 4. $1600 is the total money earned.

If you have to ask this, then you are way over paid.