Add support for symbolic results for fractions

[ghost]

Problem Statement
The calculator displays results for division only in terms of decimals. Sometimes it is very confusing for us to comprehend those decimal outputs when we are looking for a quick answer. For example: suppose one has to divide 17 pastries among 6 children, the answer 2.83333333 seems to be quite confusing. If the calculator had also shown 2⅚, it would have been very clear that each child will receive two complete pastries and a ⅚th part of the pastry. (Sorry if the example was very bad, but I am sure you would have understood the underlying problem). This is definitely a problem for students of the primary school as they are not able to understand the decimal outputs. Suppose a student has got 48/50, 45/50 and 47/50 in three subjects and he wants to calculate his average marks, then he will find this feature useful.

Evidence or User Insights
Many calculators already support symbolic results for fractions. Let's take the example of Google Calculator for Android:

Proposal
The Windows Calculator should also support showing symbolic results for fractions apart from the regular decimal output.

For example, the calculator should show 39/52 both as 0.75 and ¾

And 5¼ for 21/4.
Similarly, 14*29/52 should be shown both as 7.80769230 and 7²¹/²⁶.

Goals
Calculator should support symbolic results for fractions and decimal operations.

Non-Goals

Low-Fidelity Concept
The calculator should show the symbolic form just below the decimal result in the Standard mode of the calculator. There may be a setting for controlling this behaviour in the Settings page when it is implemented. The output should be in rich text MathML.

Requested Assignment
I'm just suggesting this idea. I don't want to implement it.

[MicrosoftIssueBot]

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

[ghost]

Similarly, 1/3 - 1/4 should result in 1/12 apart from 0.08333333.

[grochocki]

Thanks for the idea! This looks like it is a duplicate of #170. I am going to close this so we can continue to conversation there. Let me know if I am mistaken and we can reopen this issue.

[ghost]

@grochocki All right. But #204 is more closely related to what I wanted.

But, I don't think there should be any button to switch between decimal and fractional modes as highlighted there. Even the buttons that we have currently such as that for switching scientific notation (F–E) is very confusing for the people. A lot of issues on GitHub revolve around this.

[grochocki]

I don't think there should be any button to switch between decimal and fractional modes as highlighted there. Even the buttons that we have currently such as that for switching scientific notation (F–E) is very confusing for the people. A lot of issues on GitHub revolve around this.

This is exactly the kind of conversation we want to have in #204 to make sure that we land on the best UX for introducing fractions :)