Update calc.html

[tushargupta1504]

🛠️ Issue (Number)

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Description

Please include a summary of the change. Please also include relevant motivation and context. List any dependencies that are required for this change.

Type of change

• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• I have made this from my own

• My code follows the style guidelines of this project

• I have performed a self-review of my own code

• I have commented my code, particularly in hard-to-understand areas

• I have made corresponding changes to the documentation

• My changes generate no new warnings

• The title of my pull request is a short description of the requested changes.

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