Fuel

Mirko recently traveled to the United States and rented a modern American convertible, orange with white stripes, with an automatic transmission, navigation, and a dashboard in English that uses imperial units. What bothers him most is that fuel consumption is shown in miles per gallon, so he cannot tell how much gasoline the car actually burns.

Write a program that converts fuel consumption from miles per gallon into liters per 100 kilometers.

One gallon is exactly $3.785411784$ liters, and one mile is exactly $1609.344$ meters.

The first and only line contains a decimal number $x$ with two decimal places, the number of miles Mirko's car travels on one gallon. It holds that $1 \le x \le 1000$.

Print, on one line, how many liters the car uses per 100 kilometers. Round the value at the seventh decimal place and always print exactly six digits after the decimal point.