River Company began the accounting period with a $$71,000$ debit balance in its Accounts Receivable account. During the accounting period, River Company earned revenue on account of $$319,300.$ The ending Accounts Receivable balance was $$62,300.$

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.$)$