please answer using financial calcultor and show work and explination please

3. You deposit $500 per month at the end of each month for the next 25 years into an account that pays 6% interest. How much could you withdraw at the end of each month for the next 20 years, and have $20,000 left at end of 20 yrs? You save for 25 and withdraw for 20 years.(2 pts) 4. If the exchange rate on 1/1/94 was 3 pesos to the dollar and you took $20,000 to Mexico and put it in a Mexican bank @ 50% interest, what was your annual rate of return in dollars if the exchange rate was 6 pesos to $1 one year later when you went to get your money and bring the dollars back to the US? (1 pts )