3³ + 3¹⁰ : 3⁸ x 3 + 3 x 3⁷ : 3⁵ + 2 x 3¹⁰ : ( 5 x 3⁵ + 3⁵ ) + 9 x 3³ = 405
= 3³ + 3 ⁽ ¹⁰ ⁻ ⁸ ⁺ ¹ ⁾ + 3 ⁽ ¹ ⁺ ⁷ ⁻ ⁵ ⁾ + 2 x 3¹⁰ : [ 3⁵ x ( 5 + 1 ) ] + 9 x 3³ =
= 3³ + 3³ + 3³ + ( 2 x 3⁴ x 3⁶) : ( 3⁵ x 6 ) + 9 x 3³ =
=3³ + 3³ + 3³ + 3⁴ x ( 2 x 3⁶) : ( 2 x 3⁶) + 9 x 3³ =
= 3³ x ( 1 + 1 + 1 + 3 + 9 ) =
= 27 x 15 =
= 405
