Can we create a custom variable using multiple custom variables

Question

I have some custom variables like CPU usage, Memory Usage, CPU cores, and Total Memory.

Now I want to create another custom variable with values 3,5,10. But for every value in the new custom variable, I want to pass values using in above custom variables.

Will it be possible? If so, could you please help?

Thanks in advance.

Thanks & regards, Bharath Kumar.