An inverted U-tube manometer is used to measure the pressure difference between two pipes A and B, as shown in the figure. Pipe A carries oil (specific gravity = 0.8) and pipe B carries water. The densities of air and water are 1.16 kg/m^3 and 1000 kg/m^3, respectively. The pressure difference between pipes A and B is _______________kPa.
Acceleration due to gravity: g = 10 m/s^2