75/8+24x12.5%+8/1
=75/8+24/8+8/1
=(75+24)/8+8
=99/8+8
=12.375+8
=20.375
感觉此题原题应是
75/8+24x12.5%+1/8
=75/8+24/8+1/8
=(75+24+1)/8
=100/8
=12.5