Calculator: Step by Step

1. Support integer and decimal operations; 2. Only support + - × ÷ operations; 3. Click the "⬅" key to delete a character. After all characters are deleted, an input line can be deleted; 4. Long press the "⬅" key to clear all input data; 5. Long press the text box to copy the selected data to the clipboard, and then copy it to other applications; 6. Click the "CY" key to copy all calculated data to the clipboard, and you can copy the data to other applications; 7. Click the "⏎" key to insert an input line, restart a calculation or increase a value; 8. Long press the "=" key to complete the recalculation of all data; 9. Click to select the text box and modify the input number;