Multiply money/hours, SUM right data that has to be ''filtered'' (example in atachment)

Hey people,

In my sheet you can see there are 3 kind of ''fieldwork'' i added in my example sheet.
I would like for my time to be multiplied with the hours it says in each row, which then gets filtered so i can have a total of each 3 kinds of work.

So if 4jun traveltime started 6:00 - 10:00 it calculates that is 4 hours, then the 4 hours have to be multiplied with rate from traveltime somehow, so you get 4*55 in this case.

If then on 9jun there is traveltime again this time 2 hours, again the multiply in the same spot (Kolum J), and then later on added all the travel times together in the total travel time slot (yellow), same goes for workinghours and waiting time.

If possible i would also see the total time (for traveltime i made it blue).

I hope i explained my intentions sufficient.

Any tips and/or suggestions would be greatly appreciated.

Thanks in advance!