A simple trick to multiply any number by 8 is to just double it three times in a row. For example, to solve 8 times 3, you double 3 to get 6, double 6 to get 12, and double 12 to get 24.
Drawing boxes using the 'area model' can simplify complex multiplication by visually breaking numbers down by their place value, providing a picture of the distributive property at work.
