PROGRAMMING:Write a program to find the cumulative sum of natural numbers 1 to n (n > 1).

Write a program to find the cumulative sum of natural numbers 1 to n (n > 1). Where the value of n is entered from the keyboard.
###Input format:
Enter a natural number to assign to the variable n.
###Output format:
Output the sum of natural numbers 1 to n.
###Input example:
```in
ten
```
###Output example:
```out
fifty-five
```







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