23:4=

The expression \( 23:4 \) can be interpreted as the division of 23 by 4.

Calculating this gives:

\[ 23 \div 4 = 5.75 \]

So, \( 23:4 = 5.75 \). If you need the answer as a fraction, it can be expressed as \( \frac{23}{4} \).