If in a dream you are engaged in addition of numbers that causes in you a certain difficulty, then in real life to you serious problems which can affect your business for a long time are prepared. To find a mistake in addition means that you will be able to overcome enemies, having in due time solved their artful plans. To consider in a dream on the calculator means that in reality you will have influential allies who will save you from serious troubles. If you do not manage to make out figures which you have to put, then you fail because of the unreasonable relation to affairs.
Be sure and keep any other thoughts out of your mind before drifting to sleep as a cluttered mind can decrease the chances that you will remember your dreams upon waking. Also, focusing on remembering your dreams upon waking in the morning is another very important thing. This sounds very easy, but is often hard for some to do. Interpret a dream by "dictionary dream of interpretation"
When you very first wake up, simply think about your dreams. Don't allow your mind to drift off to other things, just lay there and think about the things you dreamt about the night before - dictionary dream meaning.