think how many/think about how many

[navi tasan]

Which is correct?

1) I am trying to think how many glasses I have drunk.
2) I am trying to think about how many glasses I have drunk.

 

[jutfrank]

They're both grammatical. They have different meanings. You probably mean 1, which means that you're trying to figure out the number.

 

[Tarheel]

Perhaps:

I'm trying to remember how many glasses of wine I've drunk.

Or:

I'm trying to remember how many beers I've had.

If you can't remember that number you've had too many and need to stop.