A lake has a surface area of 7.0 x 105 m² During a given month, the mean inflow to the lake was 2.5 m³/s. The increase in stored lake volume was observed to be 6.5 x 10 m². Precipitation during the same month was 380 mm and evaporation was 320 mm. Calculate the outflow from the lake for the same month in m/s.