The number of heads near the difference quotient 78 is the jingle of the test quotient. According to the relevant public information, the jingle of the trial quotient is: the same head undivided quotient 98, the head number near difference quotient 78, and the head number difference quotient half 5. Trial quotient is a mathematical calculation method. Trial quotient is a method of converting multi-digit division into intra-table division according to the number of digits in the high digits of the divisor to be divided and the dividend, and determining the number of digits of quotient in turn by using multiplication formula.