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What should come in place of the question mark (?) in the following questions?
$$\frac{57}{67}\times\frac{32}{171}\times\frac{45}{128}=?$$
Expression : $$\frac{57}{67}\times\frac{32}{171}\times\frac{45}{128}=?$$
= $$\frac{1}{67} \times \frac{1}{3} \times \frac{45}{4}$$
= $$\frac{15}{268}$$
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