Divide the unit "1" into several parts on average, and the number representing such a part or parts is called a true fraction, for example, or it may become a false fraction, that is, the numerator is greater than or equal to the denominator, for example, the denominator means that an object is divided into several parts on average, and the numerator means how many parts to take. The numerator is above and the denominator is below. It can also be seen as division, where the numerator is divided by the denominator (because 0 cannot be divided in division, the denominator cannot be 0). On the contrary, division can also be expressed by fractions.
Reference score-Baidu Encyclopedia