$\"\"$ $\"\"$

\

\

The expression is $\"\"$

\

$\"\"$ (Rewrite 990 as sum of 900 and 90)

\

$\"\"$ (Apply Distributive property: $\"\"$ )

\

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

\

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

\

$\"\"$ (Add: $\"\"$ ) $\"\"$

\

The value of the expression is 7920.

\