Answer:
```python
import math
# Get the values of n and r from the user
n = int(input("Enter the value of n: "))
r = int(input("Enter the value of r: "))
# Calculate nCr using the formula n! / (n-r)! * r!
nCr = math.factorial(n) / (math.factorial(n - r) * math.factorial(r))
# Print the result
print("The value of nCr is:", nCr)
```
In this program, we first import the `math` module to access the `factorial` function, which calculates the factorial of a number.
Then, we prompt the user to enter the values of `n` and `r` using the `input` function. We convert the user inputs to integers using the `int` function.
Next, we calculate `nCr` using the provided formula `n! / (n-r)! * r!`. We use the `factorial` function from the `math` module to calculate the factorials.
Finally, we print the calculated value of `nCr` using the `print` function.
By running this program and providing the values of `n` and `r` as input, it will compute and display the value of `nCr`.