PROGRAMMING:The Goddess Chang's fly to the moon
On November 24, 2020, China successfully launched the chang'e-5 probe with the long March-5 remote-5 carrier rocket and put it into the predetermined orbit. On November 28, chang'e-5 entered the orbit around the moon. On December 1, chang'e-5 landed in the lunar frontal pre selected landing area. On December 2, chang'e-5 completed the automatic sampling and packaging of the lunar surface.
At 23:10 Beijing time on December 3, chang'e-5 took off from the lunar surface and successfully entered the orbit around the moon with lunar samples. This is the first time that China has realized the take-off of an extraterrestrial object.
Before the completion of the sampling mission, a "fabric version" five-star red flag carried by the lander was successfully launched on the lunar surface. This is the first time that China has realized the "independent display" of the national flag on the lunar surface. In the early morning of December 17, chang'e-5 lander landed on earth with lunar samples.
Every small step in space corresponds to a big step in the field of scientific research“ Behind Chang'e's "flying to the moon" is a grand picture of innovation and self-improvement in China's science and technology field.
According to media reports, the speed of chang'e-5 when it approaches the atmosphere will be close to the speed of the second universe, which is 11.2 kilometers per second. This speed is about 45 times the high altitude cruise speed of civil aircraft.
Suppose that the speed of a civil aircraft is 900 km / h. according to the number of minutes input, what is the output flight distance?
###Input format:
In a row, give an integer less than 100, which represents the flight time in minutes.
###Output format:
Output the flight distance of the airliner.
###Input example:
```in
three
```
###Output sample
```out
forty-five
```
answer：If there is no answer, please comment
At 23:10 Beijing time on December 3, chang'e-5 took off from the lunar surface and successfully entered the orbit around the moon with lunar samples. This is the first time that China has realized the take-off of an extraterrestrial object.
Before the completion of the sampling mission, a "fabric version" five-star red flag carried by the lander was successfully launched on the lunar surface. This is the first time that China has realized the "independent display" of the national flag on the lunar surface. In the early morning of December 17, chang'e-5 lander landed on earth with lunar samples.
Every small step in space corresponds to a big step in the field of scientific research“ Behind Chang'e's "flying to the moon" is a grand picture of innovation and self-improvement in China's science and technology field.
According to media reports, the speed of chang'e-5 when it approaches the atmosphere will be close to the speed of the second universe, which is 11.2 kilometers per second. This speed is about 45 times the high altitude cruise speed of civil aircraft.
Suppose that the speed of a civil aircraft is 900 km / h. according to the number of minutes input, what is the output flight distance?
###Input format:
In a row, give an integer less than 100, which represents the flight time in minutes.
###Output format:
Output the flight distance of the airliner.
###Input example:
```in
three
```
###Output sample
```out
forty-five
```
answer：If there is no answer, please comment