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.
The excess blood in the failed veins then makes the veins swell, and the swollen veins can leak blood and fluid into the surrounding tissue of the leg. This blood and fluid that has leaked into the surrounding tissue of the leg often causes skin discoloration, itching, and inflammation of the leg tissue. This inflammation and leakage of the blood and fluid into the leg tissue can cause the leg skin to feel a hot or burning sensation. The vein problem âVenous Refluxâ that often causes the veins to fail and causes the hot and burning sensation to be experienced is now easily treated with modern vein procedures.