Aggregating calculated measure with slider

Hi all,

I have a fairly straightforward problem that I am struggling to do in power BI.  have a bunch of data on people who received funding on different dates. It looks something like this:

I would like to:

1. Use a slicer to select a date range to analyzef
2. aggregate the total funding received for each person in that date range
3. bin the totals to figure out, for that date range, how many individuals received different sums of money.

More specifically, if I chose a date range of 1/1/2019 - 1/1/2020 for the above data, I get the following sums:

Then, I'd want to aggregate to create a table similar to:

It seems like the easiest thing to do might be to create a dynamic new table based off of the slider range that summed the funds given for each person. Then, I could use that to build the aggregated table from part (3). However, I cannot figure out how to do so.

I'm somewhat new to Power BI, so any help you can offer would be much appreciated. For reference, I've created a .pbix file with dummy data here: https://drive.google.com/file/d/1zDwKzkU-SdkLxQymkCQcgKcjJg2oEaSB/view?usp=sharing

Thanks!