Tandy 600 Owner's Manual page 235

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Adding Up Costs
Calculate amounts for Costs or Profit from the amounts for Revenue and
the 3 categories, which are already on the spreadsheet.
To build a formula, first select the cell to receive the result of the
calculation, then select the other cells to be included in the formula. Each
time you select a cell, you type an arithmetic operator, such as to indicate
that you are performing an operation on the cell.
Add the following formula to your spreadsheet:
Costs
=
Overhead
+
Materials
+
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1. Press
IT]
for the Edit command.
2. Select the cell at R7C2.
3. Press I
=
I.
The equal sign does not appear in the
EDIT
field. If you don't press the
equal sign, Multiplan selects another cell the next time you press an
arrow key instead of adding the contents of that cell to the formula you
are building.
As you select cells in the formula and type your entries, the formula
develops in the
EDIT
field.
4. Select the cell containing $5,600.00, and type
+.
The cursor returns to
R 7C2, and the plus sign is added to the formula.
5. Select the cell containing $5,700.00, and type
+.
The cursor returns to
R 7C2, and the plus sign is added to the formula.
6. Select the cell containing $4,850.00.
The formula now looks like this:
R[-4]C+R[-3]C+R[-2]C
7. Press I
ENTER
I.
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