What is
25 3/10 + 376 77/100

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

Math it's appreciated. (picture provided)