The cake is divided into sextuple parts.

Change is inevitably a part of life.

Iris is the colored part of the eye.

The colon is a part of the large intestine.

The cogwheel is an essential part of the machine.

Farming is an essential part of the economy.

The pharynx is a part of the digestive system.

The mantissa of a logarithm is the fractional part.

The medulla is the innermost part of the bone.

Mycelium is the vegetative part of a fungus.