According to the query of Baidu Education, the reason why the denominator is cut off by one-step division is to simplify the calculation. In one-step division, if the numerator is unchanged, the denominator is truncated, that is, the denominator is truncated by two or three bits, which can reduce the amount of calculation and complexity, thus improving the calculation efficiency.

In mathematics, the denominator is the divisor in a fraction. The denominator can be any positive integer, negative integer, decimal or irrational number. In mathematical operations, the denominator is usually used to calculate the value of a fraction.