A capillary tube viscometer is calibrated with a fluid (f1) whose viscosity is 0.003 Pas, passing through the capillary in a time of 0.7 min. Subsequently, a fluid with unknown viscosity (f2) is used, which takes 1.3 min to flow out. If the densities of the two fluids are the same, how much is the viscosity of fluid 2, expressed in P (Poises)?