How to keep control of shared expenses inside marriage?
Call me old fashioned, but that sounds less like a marriage and more like a business partnership. Maybe there are business tools that would be useful.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
How to keep control of shared expenses inside marriage?

### Response:
Call me old fashioned, but that sounds less like a marriage and more like a business partnership. Maybe there are business tools that would be useful.