Per https://dqydj.com/sp-500-return-calculator/ https://dqydj.com/sp-500-return-calculator/ the trailing 20 years of SPY returns, critically including dividend

Per https://dqydj.com/sp-500-return-calculator/ https://dqydj.com/sp-500-return-calculator/ the trailing 20 years of SPY returns, critically including dividend reinvestment, is something like 7% outright or 5% adjusted for inflation. Did your calculations refer to the real total return?