FIG. 1 is a perspective view of a calculator showing my new design.
FIG. 2 is a front view thereof, shown at a reduced scale;
FIG. 3 is a rear view thereof
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines depict environmental subject matter only and form no part of the claimed design.