36:3•15/2

To solve the expression \( 36:3 \cdot \frac{15}{2} \), we can break it down step-by-step.

1. The colon (:) represents division, so \( 36:3 \) is the same as \( 36 \div 3 \).
2. Calculate \( 36 \div 3 \): \[ 36 \div 3 = 12 \]
3. Next, substitute this back into the expression: \[ 12 \cdot \frac{15}{2} \]
4. Now, perform the multiplication: \[ 12 \cdot \frac{15}{2} = \frac{12 \cdot 15}{2} = \frac{180}{2} = 90 \]

Therefore, the result of the expression \( 36:3 \cdot \frac{15}{2} \) is \( 90 \).