Easy

I took a Calculus course in university many years ago,
and the experience was so mind-bending I had anxiety
dreams about it years later. Till I finally decided as an
adult to go back and rework a ton of problems, and find
some closure with all that...

Complex exponents, I can do this. The central idea is that one
can go to Euler's notion that z(a real number plus an imginary one)
can be expressed as trigonometric functions. Easy!

https://www.dcode.fr/complex-number-exponential-form

4 + 64 = 68
8/2 = 4

https://sites.math.washington.edu/~marshall/math_307/complexnos.pdf

https://www.mathsisfun.com/numbers/complex-number-calculator.html

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Keeping in mind one can go to base e easily enough by

adding ln(current base number) to any expression with an exponent:

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http://www.math.jhu.edu/~wright/RH2.pdf