How do you input a fraction?
Use hashtags "#" at the beginning and end of a maths statement.
You can get a fraction by using the / sign between the hashtags.
Use parenthesis to group the whole numerator and whole denominator together.
one half is hashtag1/2hashtag giving
x gives a variable
xx gives a times sign
Click on the link at the top of the page "how to add symbols" and you will find lots of great features..