6 1/4*8-3 2*3*5 1/2+2 2/5*4 7/12
6 1/4*8-3 2/3*5 1/2+2 2/5*4 7/12=45 5/6 6 1/4*8=50 3 2/3*5 1/2= 20 1/6 2 2/5*4 7/12=1150-20 1/6+11=45 5/6