google fractions to decimals to help you figure out your measurements if you don't know them off hand.
.13 is .125 rounded up, which is 1/8
.25 is 1/4
.5 is 1/2
.33 is 1/3
and if you don't like an item for that menu and click on it, a list of possible substitutes will come up. so it's just fine to stick to your goals for the day and swap out whatever you need to.
-google first. ask questions later.