Click the green flag. IF YOU DO NOT PRESS THE GREEN FLAG, THE PROJECT WON'T WORK! Then press one of the buttons and press the numbers on the keyboard to put numbers in the list. Then press =. After you press =, you will have to click the green flag again to start a new operation.
READ THE INSTRUCTIONS CAREFULLY! Please check out this studio for more projects: https://scratch.mit.edu/studios/3631414/ Check out my other calculator project: https://scratch.mit.edu/projects/161016747/