Apologies for the rudimentary question. I haven't studied math and can't find an answer to this online.

Is the '$e$' in this equation for logistic regression Euler's number? If so, it doesn't matter how I calculate this; I can't get the same result. Could someone walk me through it? If I try to calculate this with a scientific calculator, I get all sorts of wrong answers — possibly because I am not using brackets in the right way. Really, I have done no maths at all!

$$\frac{e^{\color{red}{-2.91}+\color{blue}{6.26}\*\color{green}{0.1}}}{1+e^{\color{red}{-2.91}+\color{blue}{6.26}\*\color{green}{0.1}}} = 0.0924$$