Divide 2 kg into 5 parts on average, each part is a few parts of a kilogram, each part is a few parts of a kilogram, each part is a few parts of a kilogram

Divide 2 kg into 5 parts on average, each part is a few parts of a kilogram, each part is a few parts of a kilogram, each part is a few parts of a kilogram

Divide 2 kg into 5 parts, each part is 2 / 5 kg, each part is 2 kg is 1 / 5, each part is 1 kg is 2 / 5

Divide 3 kg of candy into 5 parts. How many parts of 3 kg each? How many parts of 1 kg each? How many kg each?
Please send out the formula,
I want Baidu Hi me!

1 / 5 = one fifth
3 / 5 = three fifths
three out of five
PS 1 / 5 is the formula, how to write it

A watermelon father ate half, Xiaomei ate the remaining half, and mother ate the remaining half after Xiaomei ate. How many parts of the watermelon did the three of them eat?
Specific algorithm analysis

Regarding this watermelon as 1, father ate four eighths (and half) of this watermelon, Xiaomei ate two eighths (and one fourth) of this watermelon, and mother ate one eighth of this watermelon