It seems like you're referring to a function involving an exponent that has a fraction in it, preceded by a $-2*$ multiplier. I'll do my best to clarify how to correctly read and interpret it.

If the expression looks something like this:

$f(x) = a \cdot e^{-2 \cdot \frac{b}{c}}$

This can be interpreted as follows:

• The base of the exponent is $e$ (Euler's number, approximately 2.718).
• The exponent is $-2 \cdot \frac{b}{c}$.
• The (-