Calculate deadline based on production capacity

Hi y'all,

I need to calculate a date from now based on the pre-defined "production capacity".
User manually adds info (cells C3, E3, G3 for example) and based on the information from those cells and predefined production capacity (K 3, K4 - N3. N4), the deadline should appear in cells in column E (Step 1).
Additionally, the deadlines can only be calculated from hours 8:30 till 17 (L8, N8).

Then, Step 2 deadline (col F) should add time defined in M11, then Step 3 (col G) - from M12.

Deadline H column can be ignored.

Anybody up for this challenge...?
Thank you all in advance for checking and asking if I missed any important information!

Hi Bernie,
Thanks for your reply and the questions - and apologies for not being clear.
Here's more info.
The start date/time would be "NOW". The deadlines should be calculated based on the production capacity based on the current date and time.
Steps 1, 2, and 3 are simply different steps of the process. Each of them would have its deadlines depending on the previous ones (Step 2 deadline=step 1 deadline+m11 value).

Here is an example scenario: the user receives a new project to translate to various languages. Manually inserts values to fields (C3, E3, G3 - those are not related to each other; let's assume sometimes 1500 words are 2 pages, but sometimes 4 - sometimes it's 3 hours, sometimes it's 7. No relation between those values whatsoever).
The user is also able to amend the general production capacity (O3->Q3, O4->Q4; in the example, the user states that 1000 words take 1h to process).

Based on the above, excel needs to automatically calculate the deadlines for different steps: if C3=1500, then according to production capacity, time needed=1.5h -> deadline should be calculated to [current date and time]+1.5h.
Step 2 deadline would be calculated, as per above, adding pre-defined time to S1 deadline.

Important - the deadlines can be only calculated for the limited hours as mentioned in the original message.

Thank you again for checking this!

Hi JeteMC
I'm not crying, you're crying!
This is beautiful. Thank you so much. I think this is exactly what was needed...!
If there is anything else, I will come back - for the time being marked this as solved
Have a great Friday and thanks again