Consider one mole of helium gas enclosed in a container at initial pressure $$p_{1}$$ and volume $$v_[1]$$. It expands isothermally to volume $$4𝑉_{1}$$. After this, the gas expands adiabatically and its volume becomes $$32𝑉_{1}$$. The work done by the gas during isothermal and adiabatic expansion processes are $$𝑊_{𝑖𝑠𝑜}$$ and $$𝑊_{𝑎𝑑𝑖𝑎}$$, respectively. If the ratio $$\frac{𝑊_{𝑖𝑠𝑜}}{𝑊_{𝑎𝑑𝑖𝑎}}$$ 𝑓 In2, then 𝑓 is ________.