Please answer correct calculation asap plz both are questions

Please don't answer by pen paper plz

Identify the profit-maximising output and price. Please explain all steps.

What is the profit or loss at the profit-maximising level of output? please can you show the working out

Is this industry in the short run or long-run equilibrium? If it is not in the long-run equilibrium, what will need to happen in this industry to achieve the long-run equilibrium?