1.12 update. Support display of the first, second, and thrid detail calculations.
1.11 update. Only display save/load buttons on supported devices
1.10 update. Fix the save/load functionality
1.9 update. Fix the deduce number of calculation, fix the non-input text field for Saving deduction.
1.4 update. Hide soft keyboard while switching tab. Fix the calculator % issue
1.3 Feature update. Rounding the calculation number to integer. Adding additional help for each deduce item of tax.