i need help programming this. can be coded on makecode.microbit.org

Make a program with your microbit that does the following. 1. Always displays a variable named count which starts the program equal to 2 2. When you press the A button count is multiplied by 2 3. When you press the B button 1 is added to count 4. When you shake the microbit, count resets to 1 Upload a video when finished showing all of the above. In order to get any credit it must work completely