# What is *temperature difference*?

**Temperature Difference**is the difference between two temperatures of the same scale.

## Input

**Kelvin**is the base unit of temperature in the International System of Units (SI). In temperature difference, 1K is the same as 1°C (Degree Celsius).

## Output

**Degree Réaumur**is a temperature scale for which the freezing and boiling points of water are defined as 0 and 80 degrees respectively. The temperature difference in Degree Réaumur is exactly 80% of its value in Degree Celsius.