# What is *temperature difference*?

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

## Input

**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.

## Output

**Degree Rankine**is similar to the Kelvin scale in that it starts at absolute zero and 0°R is the same as 0K (Kelvin), but in temperature difference, the change of 1°R is the same as a change of 1°F and not 1K.