Rishi has ₹1,681, which he distributes between his two sons, Shan and Piyush. He instructs them to invest their respective amounts at a compound interest rate of 5% per annum, compounded annually. After 13 years, Shan’s investment matures to the same amount as Piyush’s investment after 14 years. Determine the amount (in ₹) that Rishi gave to Shan.