I am sorry but I have to say that the question you have got, which requires 2-3 chapters amount of words of explaination. I would like to help, however, you have to give us the specific topics. e.g. growth, interesnts rate, etc.

Regards,

thank you for your help!

you see I am a softmore student whose major is econoimic.So I want to known every aspect of this issue.If you think it's difficult to explain it in short words, you can recommend a good book.