ass="mf">3940.0</span>
            <span class="p">},</span>
            <span class="s1">&#39;explanation&#39;</span><span class="p">:</span> <span class="s1">&#39;buying $3,940.00 worth of 2 securities. &#39;</span>
                         <span class="s1">&#39;Buying $1,970 STOCK_B, $1,970 STOCK_A. drift &#39;</span>
                         <span class="s1">&#39;cost got better by 4.1313, spread costs got &#39;</span>
                         <span class="s1">&#39;worse by 0.1576</span><span class="se"