Hello, I have a really silly question. When I sum up to float numbers

```
12.5 + 0.00640
```

I have the same result

```
12.5
```

I have never had such problem before. I thought the problem is with the way the number printed on the screen, but even

```
BigFloat(12.5 + 0.00640)
```

gives the same.

I mean, 0.00640 is way bigger than machine epsilon for Float64. What could be the problem?

Thank you in advance