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19 Calculați: a 0,8:16; e 645,3 100; b 25,3:50; f 0,07:1000; c 14,23:25; g 9371,2:50; d 13,9:10; h 37,2:2,4; i 18,18: 5,05; j 181,04: 14,6; k 183,6:8,5; 1 495,1:0,2. 30 ​