A conversion factor
There isn't any one general answer. It depends on what unit you want to convert to what other unit.
You can convert one unit of measurement into another unit of measurement, such as kilograms to pounds, but you cannot convert a number into a unit of measurement, such as 110.00 to pounds. At least, not unless I want to guess what unit of measurement you are using (kilograms?).
A cubic centimeter already is a unit of volume. Perhaps you want to convert it to another unit of volume, such as cubic meters, liters, etc.?
It weighs 32 kg. If you want to convert that to another unit of weight, you need to ask what it would be in that unit.
It is 0.22 inches. If you want to convert inches into some other unit of measure you must say which unit you want to convert to.
numerator; to ---apex
It depends on which measurement or unit you want to convert. Each and every different unit has its own conversion factor.
It weighs 2.2 kilograms - if you want to convert kilograms into some other unit of measure, you need to say which unit you want to convert into.
Good question, why would you. -Just cook it as instructed.
Because the French are hostile and unfriendly toward tourists from the US.
A meter is a unit of length. If you want to convert that to some other unit, please specify which one.
The answer depends on what 156 represents.