What is the total operating assets and non-operating assets for 2017?

\begin{tabular}{|c|c|c|c|c|} \hline \multirow{3}{*}{ Assets } & \multicolumn{4}{|c|}{ At December 31} \\ \hline & \multicolumn{3}{|c|}{2017} & \multirow[t]{2}{*}{2016} \\ \hline & & & & \\ \hline Cash and cash equivalents & $ & 4,813 & $ & 6,988 \\ \hline Marketable securities & & 9 & & 13 \\ \hline Accounts and notes receivable (less allowance: 2017 - \$490; 2016 - \$373) & & 15,353 & & 14,092 \\ \hline \multicolumn{5}{|l|}{ Inventories: } \\ \hline Crude oil and petroleum products & & 3,142 & & 2,720 \\ \hline Chemicals & & 476 & & 455 \\ \hline Materials, supplies and other & & 1,967 & & 2,244 \\ \hline Total inventories & & 5,585 & & 5,419 \\ \hline Prepaid expenses and other current assets & & 2,800 & & 3,107 \\ \hline Total Current Assets & & 28,560 & & 29,619 \\ \hline Long-term receivables, net & & 2,849 & & 2,485 \\ \hline Investments and advances & & 32,497 & & 30,250 \\ \hline Properties, plant and equipment, at cost & & 344,485 & & 336,077 \\ \hline Less: Accumulated depreciation, depletion and amortization & & 166,773 & & 153,891 \\ \hline Properties, plant and equipment, net & & 177,712 & & 182,186 \\ \hline Deferred charges and other assets & & 7,017 & & 6,838 \\ \hline Goodwill & & 4,531 & & 4,581 \\ \hline Assets held for sale & & 640 & & 4,119 \\ \hline Total Assets & $ & 253,806 & $ & 260,078 \\ \hline \end{tabular}