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A=FV(1+{r/n})^520.
where r = 0.14; n = 52; years = 10; You are asking for amount for God's sake.

Do that and tell me what you got; I understand your confusion...different formulae applies to different problem sets. I have solved more than 300 problem sets in compound interest. These are classical math problems and sure enough, my engineering and mathematics are both strong enough. Except you are just trying to make me look dumb. If that is the case, then I sure understand you.

You made me surprise, how could you:
A = P(1 + r)^n*10.
This is really ridiculous. Consult any expert and they will tell you it is. BIG MISTAKE!

The website says it is 14% A WEEK! Not 14% p.a.

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