(21,2544:0,9+1,02•3,2):5,6=
1) 21,2544:0,9=23,616 2) 1,02*3,2=3,264 3) 3,264+23,616=26,88 4) 26,88:5,6=4,8
1)21,2544/0,9=23,616 2)1,02*3,2=3,264 3)3,264+23,616=26,88 4)26,88/5,6=4,8