Find the anlge between the large hand and small hand of a clock at time `8:20`.

Explanation

To find the angle between the large hand (minute hand) and the small hand (hour hand) of a clock at 8:20, we can use the formula:

\[ \text{Angle} = |30a - \frac{11}{2}b| \]

where:
- \( a \) is the hour,
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