When you are overcoming difficulties, you will go through a bitter struggle and feel very exhausted. The severity of these difficulties will exceed your imagination, and you must rely on wisdom and perseverance to fight through.
Dreaming about doing addition and subtraction with a computer predicts that you will have a strong support that will make you breathe a sigh of relief.
Dreaming about finding errors in addition indicates that you can foresee enemy strategies in real life and stay ahead of them.
Dreaming about not being able to see clearly how much the number operation is signifies that ignoring some key issues has caused you financial loss.
Dreaming about being busy with addition and subtraction operations yourself suggests that to overcome difficulties, you will engage in a weary struggle, and only after the struggle will you feel that the level of difficulty far exceeds your initial imagination.