How to Access Exposure Value?

Development Programming & Scripting Blueprint
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3

Unfortunately, this does not contain a value showing the exposure Unreal Engine uses to determine whether the image is overexposed or underexposed when using auto exposure.

https://dev.epicgames.com/documentation/en-us/unreal-engine/auto-exposure-in-unreal-engine?application_version=5.1

I found a website showing a way to calculate it. This method works so far.