It is so very simple and quick to get the answer, especially since you can use the calculator that comes with your computer. But since you are not able to do so, the answer is 28.2.
1,880 minus 1,854 is 26.
47 - 512 = -465
47 - 3 = 44
32 - 47 = -15
2010 - 47 = 1963
52 - 47 = 5
47 - 93 = -46
71 - 47 = 24
-144
29 minus 76 is -47.
They are: 2, 5 and 47
1880