19,6*2,5-(2,0625-1 5/12):1/8

19,6 * 2,5 - (2,0625 - 1 5/12) : 1/8 = 43 5/6
1) 2,0625 - 1 5/12 = 2 1/16 - 1 5/12 = 2 3/48 - 1 20/48 = 1 51/48 - 1 20/48 = 31/48
2) 19,6 * 2,5 = 49
3) 31/48 : 1/8 = 31/48 * 8/1 = 31/6 = 5 1/6
4) 49 - 5 1/6 = 48 6/6 - 5 1/6 = 43 5/6