Put it aside
Swipe a result upward and leave it as a card in the open workspace.
MemoCalc
Too much for mental math, too small for a spreadsheet. MemoCalc lets you leave intermediate results on the screen and bring them back into the calculation whenever you need them.

Swipe a result upward and leave it as a card in the open workspace.
Drag any saved number back down and use it immediately in your next calculation.
Overlap two result cards and release. They combine into a single total.
Drop an unwanted card into the little bin. Long-press the bin to clear the workspace.
SEARCH BY PROBLEM
When a normal calculator is almost enough, but remembering intermediate numbers is not.
Keep numbers visible instead of holding them in short-term memory.
Read more →Handle small work calculations without opening another tool.
Read more →Stack subtotals together instead of typing every number again.
Read more →DIRECT MANIPULATION
Calculate, put aside, bring back, stack, and throw away. The interface stays quiet because the numbers themselves are the controls.