直接写出得数4H,Y9M*I3z2_5b.B;q
1322-199= 5R(t.m8M0p3}4H,Y9M*I3z2_5b.B;q
1.87+5.3= 5~-F8~'l3a-G8x4H,Y9M*I3z2_5b.B;q
603×39≈ 8V-U8r4H,Y9M*I3z2_5b.B;q
4950÷51≈ -u:F/j:n:a9]9e4H,Y9M*I3z2_5b.B;q