口算。0q5x+n;S4K,V8`4k.j'\'q9w,L-c
6-2=;u2t8m3Z.e)L:I/_ 2+7=9\8y;a6j7n1S'E.?7X 10-5=)c/^1H+f/X,N'f0q5x+n;S4K,V8`4k.j'\'q9w,L-c
4+5=7P,F0c+N;q,a8\8m3U-W4Q-q;}1`3m+y 10-2=5t;X:E,r6e(j(h4b)O6t3I;x 2+6=4i;?4i6k7I2a0q5x+n;S4K,V8`4k.j'\'q9w,L-c
6-4='g;W/g(c-A(@:c(P.g+B 1+8=0P6J(]8q:A-O1N)A/B2v2k1z 6-5=7k,F4S8[0x6K9X/F0q5x+n;S4K,V8`4k.j'\'q9w,L-c
5+5=-m4j*E*G 7-2=0c1?(S4`4S(I5},S)n,U.z'i5w 6+3=0t7b7N:e/K8T0q5x+n;S4K,V8`4k.j'\'q9w,L-c
10-7=.b*n(H0a5S/W)g*O0x;D)d 9+1=/f'X2K:M-~6p)v;P-g)C8U.E-U'}1U)K 7-5=3x/M,q6n(I:s.l4}'o8E,f6I0q5x+n;S4K,V8`4k.j'\'q9w,L-c
6+4=.T0L0k)g2r0l.`3h:s 0+2=7G6T2@;v1K+A+X6a 8-8=7^'x7q1?;T-K(I1S0q5x+n;S4K,V8`4k.j'\'q9w,L-c