(1+40%)= 1.4 Here, "1" means that the annual interest rate of the original bank loan is 5.832%, and "40%" means that the annual interest rate of the original bank loan is 40% higher than 5.832%, so it is 1.4 when simplified together.

For example, the loan period is 500,000 yuan:

Solution: 500 thousand = 500 thousand

Interest: 500,000× (1+40% )× 5.832 %×1= 40,824 yuan,

Bank debt: 500,000+40,824 = 540,824 (RMB)

Formula: principal × annual interest rate× number of periods = interest, principal+interest = sum of principal and interest,

Answer: 540,824 yuan will be returned to the bank at maturity.