He is a calculative person.

The cost of the project is calculable.

He calculates the total cost of the project.

She is a calculant person.

The calculational process was complex and time-consuming.

Calculability is an important concept in computer science.

The calculabilities of the data are difficult to measure.

He was diagnosed with calculous appendicitis.

She calculated the expenses calculably.

The calculableness of the problem made it easier to solve.