Find $(79{)}^2-(69{)}^2$ without actually finding the squares of the number.

Simplify $197\times 203$.

Simplify the following using the formula: $\left(a-b\right)\left(a+b\right)=a^2-b^2$

$113\times 87$

Simplify the following using suitable algebraic identity $95\times 105$.

Find the simplified result of $1.8\times 2.2$.

Simplify the following using the formula: $\left(a-b\right)\left(a+ b\right)=a^2-b^2$

$9.8\times 10.2$

Simplify: $\frac{{58}^2-{42}^2}{16}$

Simplify the following using the identities

$178\times 178-22\times 22$

Simplify the following using the identities

$\frac{198\times 198-102\times 102}{96}$