Nannan: 500× (1+4.41%) = 522.05 yuan.
∫547.32 >522.05
∴547.32-522.05=25.27 yuan
A: After three years, the sum of Lele's principal and interest is more than 25.27 yuan.
2. Pre-tax interest after interest deduction:126.54÷ (1-5%) =133.2 (yuan).
Principal:133.2 ÷ 3.33% = 4,000 yuan.
Xiao Li deposited 4000 yuan in the bank.