Go to Mother!! Are you giving birth to elephants?
In the Russian Federation, the right to maternity leave is regulated by Article 255 of the Labor Code of the Russian Federation.
Working women are granted maternity leave for 70 (in the case of multiple pregnancies - 84) calendar days before birth and 70 (in the case of complicated births - 86, when two or more children are born - 110) calendar days after birth.

Continue to teach lessons. What you have calculated is a pregnancy and childbirth hospital. This is followed by paid leave for child care up to 1.5 years and unpaid leave up to 3 years.
So 7 years of decrees is three children with a difference of 2 years.