Power BI - How do I use calculated values from various tables and store them in a separate table

I'm trying to figure out a solution to my problem. Basically we get a monthly report with about 3000 records and there's a bunch of reporting that is done on that, and there are calculations based on various columns. e.g.

At the end of it Power BI kindly sums up the columns which is great, but now what I am trying to do is take the sum of these columns and store them in a summary table so that it would be something like this so that I could use it for a time series visual

I have no idea how to go about doing this. Is this the right way to go ? Or is there a way to create a visual without having to create a summary table ? I'm at a bit of a loss, so any suggestions would be really appreciated.

You don't need any DAX calculations for that. Simply pull your data onto the fields of a line chart visual like shown below. Note that you have to drill-down from Year to Month to actually see the lines.