Percentage; Add-On; Discount - Radio Shack EC-2037 Owner's Manual

Percentage

Example: 20% of 720 is 144.
You Press
720 20 %

Add-On

Example: 30% added to 540 is 702.
You Press
540 + 30 %

Discount

Example: 800 discounted by 20% is 640.
You Press
800 – 20 %
You See
144.
You See
702.
You See
640.
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