Using The Calculator - Radio Shack 65-779 Owner's Manual

For example, to perform this calculation:
(4 5) + (28 + 2) – (7 – 2) + (75 ÷ 5) = 60
You Press
CALC
C/CE
MC
4 5 = M+
28 + 2 = M+
7 – 2 = M–
75 ÷ 5 = M+
MR
MC

Using the Calculator

You See
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43