In a huge oil tanker, salt water has flooded an oil tank to a depth of 5.00 m. On top of the water is a layer of oil 8.00 m deep, as in the cross-sectional view of the tank. The oil has a density of 0.700 g/cm3. Find the pressure at the bottom of the tank. (Take 1.025 kg/m3 as the density of salt water.)