four, 2 x 2 =, one hundred forty-four, 122 =, minus three, 6-9 =, twenty-seven, 33 =, six, √36 = , sixty-seven, 56 + 11 =, three, 24 ÷ 8 =, 3.1415..., π, seven, √49 = , one hundred sixty-nine, 132 =, fifty-six, 7 x 8 =, seventy-five, 100 - 25 = , zero, 0 ÷ 3 =, minus six, - 15 + 9 = .

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