&gt;</span> iter  20 value 384.299811</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> iter  30 value 360.308523</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> iter  40 value 354.415214</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> iter  50 value 354.244765</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> final  value 354.244748 </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> converged</span>
<span class="r-out co"><span class="r-