Sir following us the description of my thought so please guide me here (the meaning of Hadeeth). "The person who will observe fast and will try to satisfy Allaah; is forgiven by Allaah as he has not committed any sin before and will get 70 to 700% more benefit what of one virtue in Ramadhaan." Now according to Hadeeth 1 virtue = 70 to 700 (in Ramadhaan). 1 Fardh of any prayer = 70 to 700 like this if we do say our Qada' (qazza) prayers in Ramadhaan. 1 Qada' prayer = 70 to 700 prayers (only in Ramadhaan) now if we calculate it for whole Ramadhaan then there are 30 days in Ramadhaan so 70*30 = 2100. Now if we divide it with 365 in order to calculate qazza for a year2100/365 = 5.7534 = 6 years qazza almost to21000/365 = 57.534 years qazza now its up to us that in Ramadhaan we make to effort to say our qazza prayers and her is simple thing to do this and that is we make little more effort and can try to say our qazza prayers with relative one with the intension to not miss ever a single prayer intentionally and call Allaah for help. Now if we are offering Fajr then qazza of two Fardh with it of Fajr and so on. now if we are still not do this and some how manage to say our qazza prayers for half of Ramadhaan then 6 / 2 = 3 years Qada' to 58 / 2 = 29 years Qada'.

All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger. We ask Allaah to exalt his mention as well as that of his family and all his companions.

We do not know an authentic narration from the Sunnah which indicates that the reward of fasting is multiplied 700 times. Rather, it is confirmed that Allaah rewards for fasting without limitation. Imaam Muslim reported that Abu Hurayrah said: "The Prophet said: "The reward of every act of the son of Aadam will be multiplied tenfold up to 700 times, Allaah said except fasting, (it is done for My Sake and) I will reward for it (as much as I wish)." Imaams Al-Qurtubi, Ibn Al-Jawzi and others said that the narration means that the reward for the acts of good deeds of people is known to them and that they are multiplied tenfold up to 700 times except fasting, Allaah rewards for it without limitation. However, people differ in the degree of this reward they will receive. Some of them get the reward stated, and some get a reward less than that, and some others do not get anything of this great excellence and favour, based upon the extent of their fulfilling the conditions and etiquettes of fasting. The Prophet said: "Many a fasting person does not get from his fasting except hunger." [Ahmad, Ibn Maajah and others] So no one knows that he has indeed obtained this great favour.  The above is about fasting. As regards the multiplication of the reward of the prayer, it is included in the saying of Allaah (which means): {Whoever comes [on the Day of Judgement] with a good deed will have ten times the like thereof [to his credit]}[6:160]. But it could be multiplied by more than this; verily Allaah grants His Favours upon whomever He wants. However, it should be noted that the reward of fasting and praying being multiplied does not mean that if one misses an obligation he does not have to make it up. Whoever misses an obligatory prayer or obligatory fasting he has to make them up because an obligation must be made up if missed.

Allaah knows best.