For each individual situation, determine the amount that should be reported as cash. If the item(s) is not reported as cash, explain the rationale

Checking account balance $700,000; cash restricted for future plant expansion $500,000; short-term Treasury bills $180,000; cash advance received from customer $900 (not included in checking account balance); cash advance of $7,000 to company executive, payable on demand; refundable deposit of $26,000 paid to federal government to guarantee performance on construction contract.

Book solution: Checking account balance(700,000) + Cash advance received from customers(900)= 70,900. I know the answer is 70,900.... but can someone please explain to me why the $7000 is not included and why the $900 is? aren't they both cash advance?