I’m new to coding and I’m stuck on substraction exercise below.

Where by you need to replace 0 with a number such that the difference is 12. I replaced 0 with 23 but still got one error ’ 45 should be substracted with one number’

Help !!!

**Your code so far**

```
var difference = 45 - 0;
```

**Your browser information:**

User Agent is: `Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36`

.

**Link to the challenge:**

https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/subtract-one-number-from-another-with-javascript