```

total_plastic = 8.3e9 # total plastic in tons degradation_rate = 0.05 # degradation rate per day in percentage

# Calculation of daily degradation in tons daily_degradation = total_plastic * degradation_rate / 100

# Estimation of time taken to degrade all plastic in days total_days = total_plastic / daily_degradation

# Conversion of total days to years total_years = total_days / 365

# Print the result print(f"It would take approximately {total_years:.2f} years to degrade all the plastic.")

```

It would take approximately 5.48 years to degrade all the plastic.