Adding a row:
1. Insert row- Place cursor (highlites the cell) in area you want to add a row. The row will be added above where you place the cursor. Then go to insert menu and select row.
2. Copy correct format- Since the added row won't have the appropriate formatting, choose a nearby row (preferably blank), select that row from columns B through K, and copy using either the edit menu or command-C on the keyboard.
3. Paste correct format- Paste the copied cells into the newly added row by selecting the new row from columns B through K and using either the edit menu or command-V on the keyboard.
That should automatically update the the unit conversion and total formulas. Make sure it does though.