pre_text: In the fourth quarter of 2019, we recognized other income, net of expenses, of $54 million, increasing from a negative $2 million in the prior quarter and from an income of $16 million in the year-ago quarter, reflecting higher R&D grants in Italy associated with the IPCEI program. Other income and expenses, net
table: Three Months Ended
table: December 31, 2019 September 29,2019 December 31, 2018
table: (Unaudited, in millions)
table: Research and development funding $68 $14 $19
table: Phase-out and start-up costs (16) (15) (1)
table: Exchange gain (loss), net 1 (1) —
table: Patent costs (1) (1) (1)
table: Gain on sale of non-current assets 1 — 1
table: Other, net 1 1 (2)
table: Other income and expenses, net $54 $(2) $16
table: As percentage of net revenues 2.0% (0.1)% 0.6%
question: Analyse this data from a financial earnings document. What is the average Other income and expenses, net for the period December 31, 2019 and 2018?