Altruism is the principle and moral practice of concern for happiness of other human beings or animals, resulting in a quality of life both material and spiritual.
The first statement means you have lived for 5 years and you are still living here, not leaving the place. The second statement means you have lived here for 5 years and you are going to move to another place from now on.
How have you been is a common question from native english speakers. its asking what you have been up to and how life has been for you from a cetrain point. you can see that it is used in a similar way as how are you? However, your answer needs to be a little bit different.
Digit means the whole numbers from 0-9 whereas figure means drawing or diagram conveying information.
There are so many motives why a particular person wanted to learn other languages. It could be for business, career advancement, Travel, Communication, Teaching, etc.