| Name | Price | Quantity | Total |
|------+-------+----------+-------|
| foo | 7 | 4 | 28 |
| bar | 3.5 | 3 | 10.5 |
| | | 7 | 38.5 |
#+tblfm: $4=$2*$3::@>$4=vsum(@2..@-1)
#+tblfm: @>$3=vsum(@2..@-1)