Marty plans, monitors, and assess his financial position using cash flows over a month. He has a savings account and his bank loans money at $8\mathrm{.}0\%$ per year while it offers short$-$term investment rates of $4\mathrm{.}10\%.$ Marty$$s cash flows during September were as follows:

Item Cash Inflow Cash Outflow

Clothes $$760$

Interest received $$380$

Dining out $385$

Groceries $850$

Salary $8,820$

Auto payment $520$

Utilities $390$

Mortgage $1,720$

Gas $435$