# The AI (ChatGPT) S&P 500 Investing Guide: Getting to \$1,000,000 With a One-time Investment

Here is the response from ChatGPT for the prompt compound interest for \$25000 10% 40 years entered on April 11, 2023.

To calculate the compound interest for \$25,000 at 10% interest rate over a period of 40 years, we can use the formula:

A = P * (1 + r/n)^(n*t)

where: A = the final amount P = the principal amount (\$25,000 in this case) r = the annual interest rate (10%) n = the number of times the interest is compounded per year (let's assume it is compounded annually, so n = 1) t = the time period, in years (40 years in this case)

Substituting the values into the formula, we get:

A = \$25,000 * (1 + 0.10/1)^(1*40) A = \$25,000 * (1.10)^40 A = \$25,000 * 45.259 A = \$1,131,470

Therefore, the final amount after 40 years with an initial principal of \$25,000 at a 10% annual interest rate compounded annually would be \$1,131,470.

## 30 Years

Here is the response from ChatGPT for the prompt compound interest for \$25000 10% 30 years entered on April 11, 2023.

To calculate the compound interest for \$25,000 at 10% interest rate over a period of 30 years, we can use the formula:

A = P * (1 + r/n)^(n*t)

where: A = the final amount P = the principal amount (\$25,000 in this case) r = the annual interest rate (10%) n = the number of times the interest is compounded per year (let's assume it is compounded annually, so n = 1) t = the time period, in years (30 years in this case)

Substituting the values into the formula, we get:

A = \$25,000 * (1 + 0.10/1)^(1*30) A = \$25,000 * (1.10)^30 A = \$25,000 * 17.449 A = \$436,225

Therefore, the final amount after 30 years with an initial principal of \$25,000 at a 10% annual interest rate compounded annually would be \$436,225.

## 20 Years

Here is the response from ChatGPT for the prompt compound interest for \$25000 10% 20 years entered on April 11, 2023.

To calculate the compound interest for \$25,000 at 10% interest rate over a period of 20 years, we can use the formula:

A = P * (1 + r/n)^(n*t)

where: A = the final amount P = the principal amount (\$25,000 in this case) r = the annual interest rate (10%) n = the number of times the interest is compounded per year (let's assume it is compounded annually, so n = 1) t = the time period, in years (20 years in this case)

Substituting the values into the formula, we get:

A = \$25,000 * (1 + 0.10/1)^(1*20) A = \$25,000 * (1.10)^20 A = \$25,000 * 6.727 A = \$168,178

Therefore, the final amount after 20 years with an initial principal of \$25,000 at a 10% annual interest rate compounded annually would be \$168,178.