Three installments: repayment in each installment =2000/3+2000*0.70%=680.67, with a total repayment of 2042 yuan.
Six installments: repayment in each installment =2000/6+2000*0.60%=345.33, with a total repayment of 2072 yuan.
Nine installments: repayment in each installment =2000/9+2000*0.60%=234.22, with a total repayment of 2 108 yuan.