The formula to calculate the baseball glove size (G) is:
\[ G = \frac{L + W}{2} \]
Where:
Let's say the hand length (L) is 7 inches and the hand width (W) is 4 inches. Using the formula:
\[ G = \frac{7 + 4}{2} \]
We get:
\[ G = 5.5\, \text{inches} \]
So, the glove size is 5.5 inches.