вычислите 268,8:0,56+6,44*12
268,8:0,56+6,44*12=480+77,28=557,28
........................................
..........................................
268.8 : 0.56 + 6.44 * 12= 557.28
1. 268.8 : 0.56= 480
2. 6.44*12= 77.28
3. 480 + 77.28 = 557.28