Table:
text: Thierry Boutsen
Complete Formula One results
Complete Formula One results
Year_ Team Chassis Engine Points
1983 Arrows Racing Team Arrows A6 Cosworth V8 0
1984 Barclay Nordica Arrows BMW Arrows A6 Cosworth V8 5
1984 Barclay Nordica Arrows BMW Arrows A7 BMW Str-4 ( t/c ) 5
1985 Barclay Arrows BMW Arrows A8 BMW Straight-4 ( t/c ) 11
1986 Barclay Arrows BMW Arrows A8 BMW Straight-4 ( t/c ) 0
1986 Barclay Arrows BMW Arrows A9 BMW Straight-4 ( t/c ) 0
1987 Benetton Formula Ltd. Benetton B187 Cosworth V6 ( t/c ) 16
1988 Benetton Formula Ltd. Benetton B188 Cosworth V8 27
1989 Canon Williams Team Williams FW12C Renault V10 37

Question: What is the average score for the pre-1983 Arrows racing team for Thierry Boutsen's full Formula 1 results?

Question: How many points for the post-1985 Cosworth V8 engine for Thierry Boutsen in the overall results of Formula 1?