Consider the reactor shown in the figure. The flow rate through the reactor is Q m³/h. The concentrations (in mg/L) of a compound in the influent and effluent are C₀ and C, respectively. The compound is degraded in the reactor following the first-order reaction. The mixing condition of the reactor can be varied such that the reactor becomes either a completely mixed flow reactor (CMFR) or a plug-flow reactor (PFR). The length of the reactor can be adjusted in these two mixing conditions to L_CMFR and L_PFR while keeping the cross-section of the reactor constant. Assuming steady state and for C/C₀ = 0.8, the value of L_CMFR / L_PFR (round off to 2 decimal places) is _______.