Either in a script or in the Command Window, create a string variable that stores a string in which numbers are separated by the character ‘x’, for example '12x3x45x2'

Either in a script or in the Command Window, create a string variable that stores a string in which numbers are separated by the character ‘x’, for example '12x3x45x2'. Create a vector of the numbers, and then get the sum (e.g., for the example given it would be 62 but the solution should be general).