Tally.
Type a whole expression, with precedence and brackets, and read the answer as you go. Every result prints to the tape.
TALLY · ET-12
0
TALLY · TAPE
Each result prints here when you press =. Select a line to use its answer, or its expression, again.
Keyboard: 0–9 . + − * / ^ ( ) ! % · Enter for = · Backspace · Esc clears