A 4-ft diameter oil pipeline is being proposed for a remote location. The oil has a specific gravity of 0.8 and a dynamic viscosity of 9.93 × 10-5 lb-sec/ft2. A model will by used to study the pipeline flow conditions using a 0.5-ft diameter pipe and water at normal conditions (68.4°F). If the design flow rate in the prototype is 125 cfs (ft3/sec), what is the required flow in the model?