I have an Excel table with some cells that are numbers and some cells that are strings. I want a function that can add search through the table, and if the cell is a number, add it(+) and if it's a string, ignore it.

I know how to do this easily in say C# but how do I do this in Excel?

This is what I want the equivelant of:

```
object[] celldata = new object[] {"blabla",2,3,"blabla",3,"blabla"}
int additioncell;
foreach(object cells in celldata)
{
if(cells.Equals(int)
additionalcell += (int) cells;
}
```

How do I convert this into an Excel function?