Added fixes for Bills 💵

[warmachine028]

Bills 💵 #51 📐

• I Pritam have worked for #51

Guidelines 🔐

I accept the fact that i have followed the guidelines and have not copied the codes from around the internet

• [x] Contribution Guidelines
• [x] Code of Conduct

Issue to be closed 🛅

• My pull request closes #51

Screenshots 📷

Here are the pictures of changes that i have made 🔽

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