Using the table, what is the average daily balance of the credit card for the August $1-$ August $31$ billing period? Round your answer to the nearest cent.

$\backslash$table$[[$Day$,$Activity,Adjustment,Closing Balance$],[1,--,--,850],[8,$Payment,$-400,450],[16,$Purchase,$+350,800],[24,$Purchase,$+600,1,400]]$

Provide your answer below: