Table:
0
A
B
C
D
E
F
1
Year
Winner
Country
Score
To par
1st prize ( $ )
2
1972
David Graham
Australia
278
−6
30,000
3
1971
Bobby Mitchell
United States
262
−22
30,000
4
1970
Bruce Devlin
Australia
268
−12
30,000
5
1969
Charles Coody
United States
271
−9
22,000
6
1968
Dave Stockton
United States
276
−8
22,000
7
1967
Gardner Dickinson
United States
271
−9
20,700
8
1966
R. H. Sikes
United States
268
−16
20,000
9
1965
Dan Sikes
United States
272
−12
25,000
10
1964
Tony Lema
United States
270
−14
20,000
11
1963
Arnold Palmer
United States
273
−11
22,000

Questions and formulas:
Question: What is the total number of 1st prize ($) that has a United States country with a score lower than 271 and in a year after 1964 with a winner of Bobby Mitchell?
Formula: SUM(FILTER(F1, (C1="united states")*(D1<271)*(A1>1964)*(B1="bobby mitchell")))
Formula2: SUM(FILTER(F2:F11, (C2:C11="united states")*(D2:D11<271)*(A2:A11>1964)*(B2:B11="bobby mitchell")))
Level: easy