$$\frac{12}{14}; 4a=\frac{11}{124}$$
$b=\frac{6}{7}\approx 0.857142857$
$$a=\frac{\frac{11}{124}}{4}$$
$$a=\frac{11}{124\times 4}$$
$$a=\frac{11}{496}$$
$$b=\frac{6}{7}$$
$$a=\frac{11}{496}$$ $$b=\frac{6}{7}$$
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