The calculator should accept exponential numbers without sign in scientific mode

[rudyhuyn]

Describe the bug The calculator currently only accepts exponential numbers like 2323e+12 and 23241e-12. The calculator should also accept 2323e12 or 334.232e12 in the Scientific mode.

A comment line 94 of CopyPasteManager.cs also indicates this need:

//-- add support to allow pasting for expressions like 1.3e12(as of now we allow 1.3e+12)

Steps To Reproduce

• copy "2323e12" in your clipboard
• paste in the calculator (Scientific mode)
• The calculator will display "Invalid input".

Expected behavior

• The calculator should display 2,323.e+12

Device and Application Information (please complete the following information):

• OS Build: 10.0.18348.0
• Architecture: X64
• Application Version: 10.1812.10048.0

[MicrosoftIssueBot]

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

[grochocki]

Thanks for the report! Agree with expected behavior for input without sign:

The calculator should display 2,323.e+12

[rudyhuyn]

Thanks for the report! Agree with expected behavior for input without sign:

The calculator should display 2,323.e+12

OK, I will create the diff tonight once home!