$5^2 = 5 * 5 = 25$

$4^3 = 4 * 4 * 4 = 64$

Вычисления:
4 * 4 * 4 = 16 * 4 = (10 + 6) * 4 = 10 * 4 + 6 * 4 = 40 + 24 = 64

$30^3 = 30 * 30 * 30 = 27000$

Вычисления:
30 * 30 * 30 = 3 * 10 * 3 * 10 * 3 * 10 = (3 * 3 * 3) * (10 * 10 * 10) = 27 * 1000 = 27000

$11^2 = 11 * 11 = 121$

Вычисления:
$\snippet{name: column_multiplication, x: 11, y: 1}$

$23^2 = 23 * 23 = 529$

Вычисления:
$\snippet{name: column_multiplication, x: 23, y: 23}$

$18^2 = 18 * 18 = 324$

Вычисления:
$\snippet{name: column_multiplication, x: 18, y: 18}$