A one-layer leather flat belt is intended to be transferred to a cast iron belt pulley with a diameter of 300 mm and a diameter of 600 mm of the driven pulley. Calculate the transmission power when the belt width is 150 mm, the thickness is 6 mm, the allowable tensile stress is 25 kgf/cm2, the belt mass per unit length is 0.8 kg/m, the joint efficiency is 80%, the coefficient of friction is 0.25, the distance between the centers of the axis is 800 mm, and the rotational speed of the drive pulley is 1,000 rpm.