I am saving a certain amount of money every month to repay the principal.

He is paying a fixed amount every month to repay his debt to the bank.

The monthly repayments are tough for me.

It's important to save a little money every month.

The budget for this project is set and will not change.

This project meets a certain standard.

How much is the amount of money for this product?

I go to the library every month.

I go to the library every month.

He attends a class to learn dialects every month.