Need additions made to my three excel calculators

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Job Description

I have three different excel calculators in one excel file. I want to add automated sentences at the end of the file after all the calculators have been inserted with values.

Here is an example idea of what I'm looking for:

After comparing Gas and Butane in energy costs, maintenance costs and replacements costs.

I need to add up all three savings in Gas and Butane and subtract the Gas costs by the Butane Costs which then shows how much money is saved by using Butane.

I write the same generic therefore statement sentence for each clients so I want to make it automated and intregrated with these three calculators so that it automatically produces a Conclusion sentence that shows the math by costs of Gas Butane comparsion as mentioned above.

The real calculator I need is different I will explain full details after hire but that is the jist of it.