There's no possibility to set decimal point to middle value

[Elbar]

Describe the bug

There's no possibility to set decimal point to value

To Reproduce
Steps to reproduce the behavior:

1. Open the app
2. Type e.g. 8 + 6 + 4
3. Start putting decimal point to values from the END, it should like this 8 + 6 + 4.5
4. Try to put decimal point to middle value
5. See error, no decimal point won't be added. For details see video below.

Expected behavior
Decimal points should be added regardless of position of value

Screenshots/videos

Screen.Recording.2024-07-04.at.23.17.51.mov

Smartphone (please complete the following information):

• Device: [Xiaomi A3]
• OS: [Android 11]
• App version [3.0.1]
• Language [English]

Additional context
Add any other context about the problem here.