### CONTEXT (Previous Events):
<system_output timestamp="3576.689701">Selecting previously unselected package psmisc.
</system_output>
<system_output timestamp="3576.694096">Preparing to unpack .../114-psmisc_23.6-1_i386.deb ...
</system_output>
<system_output timestamp="3576.694369">Unpacking psmisc (23.6-1) ...
</system_output>
<system_output timestamp="3576.902571">Selecting previously unselected package rdate.
</system_output>
<system_output timestamp="3576.907605">Preparing to unpack .../115-rdate_1%3a1.11-3_i386.deb ...
Unpacking rdate (1:1.11-3) ...
</system_output>
<system_output timestamp="3576.96664">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="3576.971031">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="3576.971915">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="3577.032243">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="3577.036485">Preparing to unpack .../117-smartmontools_7.3-1+b1_i386.deb ...
</system_output>
<system_output timestamp="3577.056223">Unpacking smartmontools (7.3-1+b1) ...
</system_output>
<system_output timestamp="3577.267141">Selecting previously unselected package ssh.
</system_output>
<system_output timestamp="3577.271254">Preparing to unpack .../118-ssh_1%3a9.2p1-2+deb12u3_all.deb ...
</system_output>
<system_output timestamp="3577.272111">Unpacking ssh (1:9.2p1-2+deb12u3) ...
</system_output>

### TARGET LINE (Extract and Classify THIS Timestamp):
<system_output timestamp="3577.327873">Selecting previously unselected package strace.
</system_output>

Answer: 3577.327873, old event