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Find the compound interest at the rate of 13.8 \(\%\) per annum for 2 years on the principal, which in 7 years at the rate of 8.9 \(\%\) per annum gives 3452 as simple interest. (Use: 1.1382 \(\approx\) 1.295)
 
Answer:
 
The compound interest \(=\) \(₹\).
 
[Note: Submit the answer a whole whole number.]