where is the fraction key

http://web2.0calc.com/questions/how-do-i-type-in-fractions

 

Please look here.

In the homepage calculator? Just type in the following example:

4/6

it will appear as $${\frac{{\mathtt{4}}}{{\mathtt{6}}}}$$ in the homepage calculator.٩(●̮̮̃•̃)۶