Example 1

Row 1 100

Row 2 200

Row 3 0

Row 4 300

Row 5 400

Row 6 0

Row 7 0

Row 8 0

Becomes

Row 1 100

Row 2 200

Row 3 300

Row 4 400

Row 5 0

Row 6 0

Row 7 0

Row 8 0

Example 2

Row 1 100

Row 2 200

Row 3 0

Row 4 300

Row 5 0

Row 6 400

Row 7 0

Row 8 0

Becomes

Row 1 100

Row 2 200

Row 3 300

Row 4 400

Row 5 0

Row 6 0

Row 7 0

Row 8 0