River Co. began the accounting period with a $72,500 debit balance in its Accounts Receivable account. During the accounting period, River Co. earned revenue on account of $308,400. The ending Accounts Receivable balance was $71,300.

Required

Based on this information alone, determine the amount of cash inflow from operating activities during the accounting period. (Hint:Use a T-account for Accounts Receivable. Enter the debits and credits for the given events, and solve for the missing amount.)