9 ч 45 мин. - 263мин.= мин 2 в. 38 лет. × 4= лет
8 сут. 40 ч. : 4= ч.
8 мин. 20 с. = с.
1 год. 241 сут + 138 сут = сут
3 в. 15 лет. +360 лет = лет​
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