Calculate the table totals

Go ahead... commit the treachery of using vim as a spreadsheet.

Input

+--------------+--------+----------+---------+
| Item         | Cost   | Amount   | Total   |
+==============+========+==========+=========+
| Apple        | 2.00   | 3        |         |
+--------------+--------+----------+---------+
| Orange       | 2.50   | 4        |         |
+--------------+--------+----------+---------+
| Banana       | 1.00   | 6        |         |
+--------------+--------+----------+---------+
| Kiwi         | 7.00   | 5        |         |
+--------------+--------+----------+---------+
| Mango        | 5.00   | 2        |         |
+--------------+--------+----------+---------+
| Plum         | 4.00   | 9        |         |
+--------------+--------+----------+---------+
| Nectarine    | 3.50   | 7        |         |
+--------------+--------+----------+---------+
| Watermelon   | 5.00   | 3        |         |
+--------------+--------+----------+---------+
| Grapes       | 4.00   | 2        |         |
+--------------+--------+----------+---------+
| Tangerine    | 5.00   | 6        |         |
+--------------+--------+----------+---------+

Output

+--------------+--------+----------+---------+
| Item         | Cost   | Amount   | Total   |
+==============+========+==========+=========+
| Apple        | 2.00   | 3        |    6.00 |
+--------------+--------+----------+---------+
| Orange       | 2.50   | 4        |   10.00 |
+--------------+--------+----------+---------+
| Banana       | 1.00   | 6        |    6.00 |
+--------------+--------+----------+---------+
| Kiwi         | 7.00   | 5        |   35.00 |
+--------------+--------+----------+---------+
| Mango        | 5.00   | 2        |   10.00 |
+--------------+--------+----------+---------+
| Plum         | 4.00   | 9        |   36.00 |
+--------------+--------+----------+---------+
| Nectarine    | 3.50   | 7        |   24.50 |
+--------------+--------+----------+---------+
| Watermelon   | 5.00   | 3        |   15.00 |
+--------------+--------+----------+---------+
| Grapes       | 4.00   | 2        |    8.00 |
+--------------+--------+----------+---------+
| Tangerine    | 5.00   | 6        |   30.00 |
+--------------+--------+----------+---------+