Qadha Salaah

Q: What is the quickest way to perform qadha Salah and what can be left out in the qadha Salah? 

Q: When reading a qadha salaah, can one also join the intention of reading a sunnat and or sunnat e muakkadah salaah together with the qadha of the fardh salaah?

Q: My question is regarding the fidya for salah of my grandfather that passed away (May Allah forgive his sins and bless his soul). Our family (including aunts and uncles in Pakistan, USA and UK) decided to pay the fidya for his 29 years worth of salaahs that he didn't pray but the problem we are having is about the calculation of wheat as which country's wheat price should we consider. He got matured (the time when salah becomes farz) in Pakistan, lived in Africa for 10 years and also passed away there but his body was brought to Pakistan for burial.

1. Which country's wheat price should we consider? Paksitan, USA (my family resides here) or Africa?

2. After considering the wheat price, how can we divide the payment of the fidya in all the family members? If the wheat price of America or UK is considered then the aunts in Pakistan will not be able to pay as it is too much after the conversion amount in rupees.

Q: My question is that, if a person deliberately left many prayers (namaz) then how can he complete them?

Q: If I missed a fardh prayer of fajr then I went to offer zuhar prayer with jamat and when jamat started then should I first offer qaza prayer of fajr and then join the jamat or should I first join the jamat for zuhar prayer and then offer farz prayer of fajr?

Q: Can Qadha salah be performed after asar and fajar namaz? People say no salah should be done after asar neither nafal nor qadaa. My mother was about to offer magrib qazaa of previous day after asar next day, i stopped her as i read that no sajda should be done after asar farz till magrib. 

Q: I started praying five times a day. Now I realize that I lost almost 25 years of praying. So according to this I was praying all this month but not regularly so Ramadan regularly praying almost praying for other days as well morning. Was it as well so I feel almost 10 years has been done now remaining 15 years prayers out there so I calculated for 15 years. So I need to clear 5475 pending prayers it is just an approximately figure please suggest advise me on this one

Q: I'm currently offering my qadha salahs for which each day matters alot. I suffered from istihadah this month and was told not to offer qadha salah during istihadah. Kindly let me know the ruling of qadha salah and recitation of Quran during istihadah.

Q: If a person omits salaah intentionaaly and does not pray it at the prescribed time, can he pray it as qazaa at the time of the next salaah or when the time of that prayer is finished?

Q: Can you work out qadha for fajr, zohur, asr, magrib, isha and 3 witr for me from the age of 13 years till the end of 17 years. Basically from the time I became baligh.