InstaChat Company is preparing to create financial statements at the end of the accounting period. It has the following end of period account balances (except the balance for retained earnings is the beginning balance): - Accounts Payable: $50,000 - Accounts Receivable: $70,000 - Accumulated Depreciation-Equipment: $150,000 - Cash: $70,000 - Common Stock: $80,000 - Depreciation Expense: $30,000 - Dividends: $20,000 - Equipment: \$450,000 - Prepaid rent: $20,000 - Rent Expense: \$5,000 - Retained Earnings (beginning balance): $35,000 - Service Revenue: $350,000 - Supplies: $10,000 - Supplies Expense: $50,000 - Unearned Service Revenue: \$60,000 If ending retained earnings is $280,000, how much is total stockholders' equity? Do not enter dollar sign or commas; just numbers