To solve the expression \( 7(1812) - 3(1812) \), we can factor out the common term \( 1812 \):
\[ 7(1812) - 3(1812) = (7 - 3)(1812) \]
Calculating \( 7 - 3 \):
\[ 7 - 3 = 4 \]
Now substitute back into the expression:
\[ (7 - 3)(1812) = 4(1812) \]
Next, we multiply \( 4 \) and \( 1812 \):
\[ 4(1812) = 7248 \]
Thus, the final value of \( 7(1812) - 3(1812) \) is:
\[ 7248 \]
The missing value in the solution is \( 7248 \).