Hey there mate!
So, when doing this kind of notation (scientific notation), this is pretty much like braking down the number,and trying to make it more simple.

I hope this helps you! :)
7.59km,7.6km,7613m hope that helps
Hey! I don’t know if this is what you mean.. but I tried to understand it.
78^1
73^1
Have a good day :)
B. P+Q
This the answer on edmentum