1959+3910−5.221959−62750+5.22÷(1993×0.41995×0.5+1.61995)

19
5
9+3
9
10−5.22
19
5
9−6
27
50+5.22÷(
1993×0.4
1995×0.5+
1.6
1995)，
=
19
5
9−1.32
19
5
9−1.32÷
1993×0.4+0.8
1995×0.5，
=1÷
0.4×(1993+2)
1995×0.5，
=1÷
4
5，
=
5
4．
再问： /就是横杠