Cyclohexane ($C_6H_{12}$) is produced from benzene ($C_6H_6$) and hydrogen ($H_2$) according to the following reaction: $$C_6H_6 + 3H_2 \longrightarrow C_6H_{12}$$ In this process, the overall and single-pass conversions are $90\%$ and $25\%$, respectively. The recycle stream contains $25 \text{ mol \% } C_6H_6$ and $75 \text{ mol \% } H_2$. If the fresh feed contains $25\%$ excess $H_2$, at steady state, the ratio of the molar flow rate of recycle stream to that of the fresh feed is _________ (rounded off to one decimal place).