The phrase "calculated way" means that something is done with careful thought, planning, and consideration rather than being done casually or impulsively.
The creditor payments are calculated this way so each debt takes the same length of time to be paid back in full. (debtadvicefoundation.org)
Add the 50 percent requirement for domestic content, and automakers must carefully calculate ways to find new sources for thousands of components to meet these new rules. (cdhowe.org)