Explanation:
what is squared (or the result of a squaring operation) ?
is 2×2×3×3×5×5 already the square of a number ?
then it's value is 4×9×25 = 900, which is the square of 30 (2×3×5)
or do you want to get the square of this provided number ?
(2×2×3×3×5×5)² = 2×2×2×2×3×3×3×3×5×5×5×5 =
= 810,000