It seems like you have shared an equation written on paper. I'll go ahead and transcribe the formula for further clarification.

From the image, it looks like the expression is:

$\frac{20^2}{\sqrt{\ln(1.6 + 1.33) + 0.67 \ln(\ln(1.6 + 1.33))}}$

Here’s a breakdown:

• The numerator is $20^2$, which equals 400.
• The denominator involves a square root ($\sqrt{}$) of a natural logarithmic expression:
  • $\ln(1.6 + 1.33)$ is inside the first part.
  • $0.67 \ln(\ln(1.6 + 1.33))$ is added to the result of the first log operation.

Would you like me to simplify and solve this expression?