The most common and most likely answer to this crossword clue is the 8 letter word NUMERATE
I've seen this crossword clue in The Guardian
N
U
M
E
R
A
T
E
More clues leading to the result NUMERATE
- Having no problem with sums of money initially kept in a tureen that’s cracked
- Able to do maths, working out true mean
- Can count on union backing about tea break
- Local man returns to English class able to solve problems with figures
- Miners with guidance finally value being competent at arithmetic
- Educated miners on energy charge
- Mathematically able to work out true mean
- Aren’t emus, largely, surprisingly, able to do sums?
Buddy explains!

The straight part
We know that "Can count" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case can count = numerate.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does NUMERATE mean?
NUMERATE verb- To count
- Having the ability to understand numbers and perform arithmetic.