$\"\"$

The expression is $\"\"$

$\"\"$ (Replace x with 7 and y with 3 in original expression)

$\"\"$ (Rewrite the expression as division problem)

$\"\"$

By the order of operations (PEMDAS):

First evaluate the expression within the parenthesis.

$\"\"$ (Multiply: $\"\"$ )

$\"\"$

Next operation is division.

$\"\"$ (Divide: $\"\"$ )

$\"\"$

The value of the expression is 21.