The standart calculator don't use PEMDAS

[softyoda]

Describe the bug
The standard calculator don't use using standard order of operations. But the scientific one work fine.

Steps To Reproduce
Make simple calculi like 1+2*3

Expected behavior

Answer should be 7 instead of 9 and the calculator should be consistent

Screenshots

Device and Application Information

• OS Build:1909
• Architecture:x64
• Application Version:10.2011.16.0
• Region:France
• Dev Version Installed:No

[softyoda]

Look like 13k others people think that too https://www.reddit.com/r/mildlyinfuriating/comments/5ddiyw/windows_calculator_ignores_order_of_operations/

[MicrosoftIssueBot]

This is your friendly Microsoft Issue Bot. I've seen this issue come in and have gone to tell a human about it.

[mdtauk]

Switch it to the Scientific mode if you want Order of Operations by default. The standard mode performs calculations one after another.

#1212 #1436 #138

[softyoda]

But is it a feature or a bug ?

[mdtauk]

But is it a feature or a bug ?

A feature. It is a different use case and way of working.
If you need your orders of operation enforced without manually using brackets, then use the Scientific mode

[grochocki]

Thanks for the bug report! This issue is a duplicate of #138. As discussed there, the "immediate mode" behavior in standard mode is by design, but there is a change in progress to avoid showing incorrect expressions like the one in your example (spec).