"To follow these calculations" means to understand or keep up with the mathematical steps or process that are being described or performed. It implies following along and comprehending each step in a sequence of calculations. Full definition
I calculated my TDEE with the information learned from the page and followed the calculations exactly how they're labeled here. (legionathletics.com)
Previously, I had constructed tables of P / Ex using Professor Robert Shiller's database, following his calculations except for the number of years of real earnings to average and then thinning the results to present only the January values. (early-retirement-planning-insights.com)
Your Potential Tax Savings Rate Methodology: Potential tax savings are based on the following calculation: (Realized Long - Term Losses × Long - Term Tax Rate) + (Realized Short - Term Losses × Short - Term Tax Rate). (fidelity.com)