(600/30-7)*5-(24-4*4)*(32/16)+60/4*10=(20-7)*5-(24-4*4)*(32:16)+60:4*10=13*5-(24-4*4)*(32:16)+60:4*10=13*5-(24-16)*(32:16)+60:4*10=13*5-8*(32:16)+60:4*10=13*5-8*2+60:4*10=65-8*2+60:4*10=65-16+60:4*10=65-16+15*10=65-16+150=49+150=199.
500-(28*5+25*4-120/2)/6-(28/14+420/140)*30= 500-(140+25*4-120:2):6-(28:14+420:140)*30=500-(140+100-120:2):6-(28:14+420:140)*30=500-(140+100-60):6-(28:14+420:140)*30=500-(240-60):6-(28:14+420:140)*30=500-180:6-(28:14+420:140)*30=500-180:6-(2+420:140)*30=500-180:6-(2+3)*30=500-180:6-5*30=500-30-5*30=500-30-150=470-150=320.