He would have 25 loaves of pumpkin bread because there are 5 pumpkin bread for every 8 loaves, and when you divide the total amount of loaves by the amount of 8 loaves you get 5. Then you multiply the five you got from the division and multiply it with the 5 you get from the amount of pumpkin bread per 8 loaves of bread, you get 25 loaves of pumpkin bread.
Turn both fractions into mixed fractions resulting in 75/2 and 5/2. Then turn them into decimals. 75/2= 37.5 and 5/2= 2.5. Then divide each other 37.5 / 2.5= 15. 15 is your answer. Hope it helped :)