Decode this number for me please. ( this is a number what is it?

Tool to convert letters to numbers and vice versa. The letter-to-number cipher consist in replacing each letter by its position in the alphabet

I do not believe this can be converted to my knowledge.

It depends on the subject for me. some exams are easier than others so i usually go through it and answer questions i know based on my general knowledge, then double check after. going through the lesson can a lot  because the exams can be  very lesson-specific, but sometimes they are ridiculously long so a lot of people don't take the time. i did find that, when i went through the lessons, i was making 100's on my exams vs strictly using + the internet and  i make 90's. 

The answer is to reassure the reader about dangers of mad cow disease.