$3.$ The long$-$term liabilities of the company in $2019$ and $2020$ were $1\mathrm{.}6$ million and $1\mathrm{.}7$ million, respectively. The interest expenses in $2020$ were $150000.$ The shareholder's equity in $2019$ was $3\mathrm{.}2$ million, the shareholder's equity in $2020$ was $3\mathrm{.}5$ million, and the cash dividends paid in $2020$ were $200000.$ The net capital expenditure in $2020$ was $900000,$ and the net working capital decreased by $120000.$ What is the operating cash flow $($OCF$)$ for $2020.$