In daily life, 1 month is 30 days, and 169 days is several months, that is, 169 divided by 30 equals 5 months, and 19 days is equivalent to more than 5 months.

It is common to find math problems for several months. Usually, there are 365,438+0 days in a big month, 30 days in a small month, and February is special, with 28 days in a normal year and 29 days in a leap year. Therefore, the calculation is the notification month, which is calculated according to 30 days of a month.