Refinancing one fraction selling the other fraction in a context of variable price

Good evening for everybody!

It's my first post here, after having registered minutes ago in this forum. I hope I can find some help to help me to solve this problem.

I looking for the solution formula to excel (office 2016) to this problem:

I have 15000 issued rights in wallet. In a few days I have to decide what to make with them.

I'll sell part of them so I can gather the money enough to refinance the underwriting of the other part not sold.

I need to know how many rights should I sell so that the sold one give me back the precise money to pay the underwriting of the remaining rights, knowing tha the price of rights will vary along the negotiation (just like shares in stock market).

Conditions:

Total Number of rights in wallet - 15000
Price of rights - they will be negotiated for some days (so price will be one constant variable)
Price to underwrite one right - 15*0.094
N.º of rights to sell - Variable (depending on price of the rights - i think...)
N.º of rights to underwrite - (the difference between the total number of rights and the sold rights)

Can you help me formulating a way to construct a formula to excel so i can solve this problem?

Thank you very much!

(I know it's unfair to say it, but I'm in a hurry... It would be nice if i have it tomorrow night. Thank you a lot for your attention.)

Sorry, ProtonLeah.

Of course I'll change thread title. But let me tell you i'm not in a graduation level. I've already finished it, but it's not in maths or even computing. That's the reason I expected some help from you! This problem suddenly got up in my way and requires an urgent solution. I'm just tryng some help. This is not my field of specialization. My job belongs to the world of law... And it would be very polite of you to apologize for your assumption. I thought this forum could help me solving this problem quickly... And I thank you all very much for that!

I'll change thread title and for my mistake I apologize too.

I tried to take a look to the other thread titles, but i was not able to choose the right words to change it. I'm not specialized in excel language or math language, even i know how to describe the problem in a current speech. Can you help me after taking a look to the problem enunciation?

Thank you very much, Protonleah, for your attention.

ProtonLeah, I think it's better to delete this thread.

I'll go to the tutorial section, with a new formulation, this time with the mathematical formula for the same problem. I think I have achieved the right formula, but i don't feel ready to translate it into an excel code. Do you think i can get some help here in your forum?

Thank you very much.

My best regards.

Please to delete...