5000*12*17%=10200
1000/(1+17%)*17%=145.30
50*23.4/(1+17%)*17%=170
800*23.4/(1+17%)*70%*17%=1904
500*23.4/(1+17%)*17%=1700
5000*17%=850
销项税额=10200+145.30+170+1904+1700+850=14969.30
进项税额=13600+3400-30000*17%=17000-5100=11900
应纳增值税=14969.3-11900=3069.30