When using the "Calculator" function, you'll need to manually type in the calculations.
You may click on the content elements in the page to add them and their values to the calculation bar, but depending on what you wish to do with the values of the content, you'll need to add in the formulas, just as if you were making calculations in an Excel document.
Here is a list of all the available formulas:
abs(x) - returns absolute value of x.
acos(x) - returns the arccosine of a number 'x' in radians
asin(x) - returns the arcsin of a number 'x' in radians
atan(x) - returns the arctangent of a number 'x' in radians
ceil(x) - rounds the number 'x' passed as parameter to its nearest integer in Upward direction of rounding
cos(x) - returns a numeric value between -1 and 1, which represents the cosine of the angle given in radians
sin(x) - returns the sine of a number 'x'
tan(x): returns the tangent of a number 'x'
exp(x) - returns the value of Ex, where E is Euler's number and x is the number passed to it
floor(x) - decreases the given number up to the closest integer value
log(x) - returns the natural logarithm (base E) of a 'x'
pow(base, exponent) - returns a number representing the given base raised to the power of the given exponent
random() - random number between [0, 1]
sqrt(x) - square root of number x
if(if_value,then_value,else_value) - if statement
and(x,y) - logical 'and'
or(x,y) - logical 'or'
not(x) - logical 'not'
xor(x,y) - logical 'xor'
SUM(x1, x2, ..., x(n))