Create a new column based on count of two other columns

I am new to VBA scripting but what I want to create a new column that takes the values of two columns for example:

Age Frequency
6 1
7 2
8 5
9 4

And create a third column that shows the values of age based on the frequency. They should look as follows:

6
7
7
8
8
8
8
8
9
9
9
9

So for a frequency of 2, the third column would place two 7's in the column. I have a large dataset of over 10000 values in my column following this format. What is the easiest way I should approach this in excel

Thanks