(~s)
1.
A ~ is something that you think about and work out mathematically. Calculation is the process of working something out mathematically.
Leonard made a rapid ~: he’d never make it in time.
...the ~ of their assets.
N-VAR: oft N of n
2.
A ~ is something that you think carefully about and arrive at a conclusion on after having considered all the relevant factors.
For the President, the ~s are equally difficult. If the peacekeeping operation goes wrong he risks appearing weak.
N-VAR