My First React Native App with styled component(calculator)

It's much more harder than I thought

1. React Native button styling is weird
2. Logic on Calculation is hard! I put down some logic under the excel: https://docs.google.com/spreadsheets/d/1pRR4ZJMEwt4PK48L5j2Uap2_PfwI8Z-VekUrFcw5TSg/edit?usp=sharing

Styled component is really helpful framework in themeing! Thanks a lot!!!!!! Please give me some feedback. Thanks Improvement:

1. May use big number in the future.