Adding numbers from an array into a single cell

Hi,
I have list of values(numbers) on a particular column (col. D in the xl attached) but this list varies for several scenarios. The good thing is the list of numbers are spaced at constant intervals. I'm able to capture the list of numbers into an array but struggling to add all the numbers in the list i.e., adding all the numbers stored in this array from the list into a single cell.

Could somebody please help me on how to get this done?

P.S. I need to save the list of numbers into an array.