A container having volume 282.7 cm3 and total surface area 245 cm2 is completely filled with milk whose initial temperature is 25°C. The continually stirred milk container is suddenly exposed to a steam bath at 100°C. The overall heat transfer coefficient between steam and milk is 1136 W m-2 K-1. The properties of milk are: specific heat capacity = 3.9 kJ kg-1 K-1, thermal conductivity = 0.54 W m-1 K–1 and density = 1030 kg m-3. Neglecting thermal resistance and heat capacity of container walls, the necessary time required in seconds to heat milk up to the temperature of 85°C, will be ____________.