Question

1600:4:(3x70-(2x45-3^2x2^3x5x3:12):5^3x2^2+95x2)x12

Answer 1

$1600:4:(3*70-(2*45-3^2*2^3*5*3:12):5^3*2^2+95*2)*12=\\=400:(210-(90-1080:12):125*4+190)*12=\\=400:(210-(90-90):500+190)*12=\\=400:(210-0:500+190)*12= 400:(210-0+190)*12=\\=400:400*12=12$