Yes, it is definitely possible to divide one column by another column in Excel to get a third column with the results. Here's how you can do it:

1. First, select the cell where you want the first result to appear. In your example, this would be cell D1.
2. Type the formula "=B1/C1" (without the quotes) into the formula bar at the top of the screen. This tells Excel to divide the value in cell B1 by the value in cell C1.
3. Press Enter to calculate the result. The answer should appear in cell D1.
4. Now, click on cell D1 to select it.
5. Move your mouse to the bottom right corner of the cell until you see a small black cross appear.
6. Click and drag the black cross down the column to fill in the formula for the rest of the cells in the column. Excel will automatically adjust the formula for each row, so that it divides the values in the corresponding cells in columns B and C.

That's it! You should now have a third column with the results of dividing column B by column C. If you need to change the formula later, just click on the cell with the formula and edit it as needed. Excel will automatically recalculate the results for you.