Apply the heading like "Amount" for every dataset through VBA code

[keshavtale]

In the attached file there is VBA code this VBA code working very fine i want just little change in that , that task i
currently doing manualy , first we understand what this VBA code doing for us, it means what task this code
perform for us, that is you can see before after sheet in before sheet there is no data in F column, through
this VBA code we multiply D column with E column and which is result that appear in F column and sum of that appear
below that , i just want that apply heading "Amount" for every sum which i do manually in after sheet in cell
F3 and F27 but in cell F56 and F82 there is no heading that cell is blank so apply remaining heading
in remaining cells which is blank through the VBA code, make it bold , font size 12 , background yellow, thanks