Sumation between two field

I add two fields and want to see the sum in a other field. How is it possible?

Dear Simit,

Here is our syntax guide.

Survey Solutions Team support

Calculated results can be displayed as part of the question text or static text if the calculated variable name is included between two % signs. For example:

the sum is: %mysum%

See also the “Public example User questions and common patterns” questionnaire, e.g. Livestock section and many others there.

Best, Sergiy