WEBVTT

1
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Start with net revenue and the
costs you've recorded.

2
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Subtract recorded costs to see the
gross profit.

3
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Divide gross profit by revenue to
see the gross margin.

4
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Log an extra purchase, and the
recorded costs increase.

5
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Gross profit and margin update
with the new figures.

6
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These figures exclude engineer
hours and overheads.