The table displays the number of births and deaths in some subjects of the Russian Federation in 2019. For each subject, it provides the number of births, the number of deaths, and the natural increase (or decrease). The question asks to fill in the blanks based on calculations. The table is partially filled, and the last question asks to fill in the blanks based on calculations for 'Республике Алтай' and 'Ленинградской области' to result in 'Республике Саха (Якутия)'. Assuming the 'Естественный прирост (убыль)' is calculated as 'Число родившихся' - 'Число умерших', fill in the missing values. Specifically, for 'Республика Саха (Якутия)', the natural increase is 5208, births are 12819, and deaths are 7611. For 'Ленинградская область', births are 13476 and deaths are 23390, resulting in a natural decrease of -9914. For 'Республика Алтай', births are 2998 and deaths are 2223, resulting in a natural increase of 775. The last part of the question asks to fill in the blanks. If 'Республике Алтай' and 'Ленинградской области' are inputs and 'Республике Саха (Якутия)' is an output, this implies a relationship or transformation. However, without a clear formula or context for this specific question (2. На основе расчётов заполни пропуски.), it's impossible to provide a definitive answer based solely on the provided table data. The table itself provides the data for birth and death rates for various regions. The question below the table, '2. На основе расчётов заполни пропуски.', suggests a calculation is needed. The subsequent text 'Республике Алтай Ленинградской области Республике Саха (Якутия)' implies a comparison or a task that involves these three regions. Given the context of the table showing birth and death rates, a common calculation is the natural increase (births - deaths).