The answer depends on the units used for 6*9 and since you have not bothered to share that crucial bit of information, I cannot provide a more useful answer.
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792 would be what calculates but it depends on the exact measurements of the 220 square feet.
8'x9' = 72 square feet. You'll need 72 1' x 1' pavers.
164 of them. Get 180 in case of breakage.
16"=1.33" 1.33 x 1.33 = 1.7689 sq ft 224 / 1.7689 = 126.63 pavers
Any reason why it shouldn't be 220, apart from the shape of the area?