7•7:2

To solve the expression \( 7 \cdot 7 : 2 \), we first interpret the colon (:) as division. So the expression can be rewritten as:

\[ 7 \cdot 7 \div 2 \]

Now, calculate \( 7 \cdot 7 \):

\[ 7 \cdot 7 = 49 \]

Next, divide \( 49 \) by \( 2 \):

\[ 49 \div 2 = 24.5 \]

Thus, the result of \( 7 \cdot 7 : 2 \) is \( 24.5 \).