**I am a little bit confused about this:**

I just finished [Scientific Computing with Python] course and I am trying to done the first project which is ‘Arithmetic Formatter’, I know it’s a really easy question but should I put the Arithmetic problems or I put an input() method so the user input the values he wants? If it’s like this, how could I make the program understand the values as numbers and count them? (The following code was just some tests so don’t mind about it,)

```
def art() :
a = input()
for s in a :
c =int(a)
b = c[0] + c[0]
print(b)
art()
```

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**Challenge:** Arithmetic Formatter

**Link to the challenge:**