A corporation just borrowed 400000 lei from a bank. The credit is reimbursed over the next two years in semestrial equal principals, the annual interest rates being 10% in the first year and 8% in the second year. The initial commission was 1000 lei and the annual administration commissions are in value of 400 lei per year, paid at the end of each year. Compute the cost of this debt under taxation at a corporate tax rate of 16%.

Kd=