Macro to add total hours

Thanks in advance for any help you can provided. I have a spreadsheet attached consisting of over 19000 rows. There is blank row after each workweek have ended. the total daily hours are in Column I. I am looking for a macro that will either look at Column E "wed" or column I see total daily hours above the blank row, Add those totals and display the results on the blank row in Column H.

Thanks in advance.

if it not much asking, I added the blank row. before that there were none. is possible, if there a macro that will just look for wed in column E. and then automatically insert the row and does the same operation as above.

Thanks