x = -3.6
y = 4
var = arc tan ( + x y )
eval var
z = 10.08934257789790879732498579438
q = 3
eval z
eval q
eval var
var = + z q
eval var
var = + - + x y z q
eval var
var = - 3 4
eval var
var = / 3 0
eval var
var = rads ( 90 )
eval var
var = exp ( 9 2 )
eval var
eval varunknown
var = + q varunknown
eval var