Expression : 60% of 25% of 5/6th of ? = 630
=> $$\frac{60}{100} \times \frac{25}{100} \times \frac{5}{6} \times ? = 630$$
=> $$\frac{3}{5} \times \frac{1}{4} \times \frac{5}{6} \times ? = 630$$
=> $$\frac{?}{8} = 630$$
=> $$? = 630 \times 8 = 5040$$
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