The formula is
Dividend = quotient+remainder, which is a mathematical term.
In a division formula, the dividend is divided by the divisor = quotient+remainder, and then the quotient × divisor+remainder = dividend is deduced.
Complete quotient: When the number A is divisible by the number B (not 0).
Incomplete quotient: If the number A is divisible by the number B (non-zero), it cannot be divisible.
In division, the quotient is constant: in division, the dividend and divisor are simultaneously expanded (or reduced) by the same multiple (except zero), and the quotient is constant.