If a company produces phones and earns $32 million in sales but pays $24 million for the items sold, then the company's gross profit margin would be ($32M - $24M) / $32M = 25 percent.
Burning legs can result from a number of causes, including damage to nerves in the legs from exposure to extreme heat or cold or to toxic substances. Burning legs might also result from a circulation problem that impairs blood flow to the legs, a leg injury, or intense exercise.
Several Options.: A burning sensation in the leg can be due to several factors but most commonly due to nerve irritation. Sometimes, an inflammation of the vein can cause a similar symptom but this is usually associated with pain along the course of the vein. This would not be due to a vein breaking or trying to break.