can someone explain this?

The funds dispensed at a certain ATM follow a normal probability distribution with a mean of $7,500 per day and a standard deviation of $875 per day. The machine is programmed to notify the bank if the amount is less than $6,300 or more than $8,700. If we randomly select one day this month, what is the probability that the machine will notify the bank? Use Excel or JMP to find probabilities and values. Do not round intermediate calculations. Round your final answer to four decimals. Use number format 0.0000 Do not use probability tables to find probabilities