The given expression can be simplified as follows:
log0.0085+log3 81−7
For log0.0085:
=log5−3(521)
=log5−3(5−23)
=−61
For log3 81:
=log321(34)
=log321(32)
=2
Putting it all together:
(−61)+8−7=−61+1=65
Therefore, the required result is 65.