Sum of the values in one column associated with the unique ID in another

[excelbetter]

I am looking to get the Sum of the Amounts in one column totaled up based on the Unique ID found in another column. Meaning, my first column has the IDs and the next column has the amounts. The ID column contains both matching IDs and unique IDs. I am trying, without a pivot table, to get the total amount for each unique ID and to have the total amount placed in the "SUM OF UNIQUE ID" column and have the total put on the first row of each unique ID. See attached and hopefully, this makes sense. TY!

 

[JoeMo]

Bingo. This worked. TY

You are welcome - thanks for the reply. BTW, the solution I posted works with unsorted IDs too.