Răspuns:
=3³+3²·3+3¹⁺⁷⁻⁵+2·3¹⁰:(6·3⁵)+3²·3
=3³+3³+3³+6·3⁹:(6·3⁵)+3⁵
=3³·3+3⁴+3⁵=3⁴+4⁴+3⁵=3⁴(2+3)=81·5=405
