Alston Jewellery had sales revenues last year of $2.4 million, while its break-even point (in dollars) was

Question:

Alston Jewellery had sales revenues last year of $2.4 million, while its break-even point (in dollars) was $2.2 million. What was Alston Jewellery’s margin of safety in dollars? What does the term margin of safety mean? What can you discern about Alston Jewellery from its margin of safety?