Problem: if n divided by 8 has a remainder of 1 , what is the remainder when 3 times n is divided by 8 ?
Rationale: as per question = > n = 8 p + 1 for some integer p hence 3 n = > 24 q + 3 = > remainder = > 3 for some integer q hence b
annotated_formula: multiply(3, 1)