For a firm with the following info., what is the Net Working Capital?

Prepaid expenses=$2 million, Cash=$4 million, Accounts payable=$3 million, Long-term debt=$40 million, Equity=$10 million, Net property, plant and equipment=$35 million, Accounts receivable=$5 million, Inventory=$10 million. The firm also has some short-term bank loan outstanding (Notes Payable).

please explain or show how you came to your conclusion