5.8*5.8+0.58*42+58
=5.8*5.8+5.8*4.2+5.8*10
=5.8*(5.8+4.2+10)
=5.8*20
=116
0.125*9.62*80-96.2
=10*9.62-96.2
=96.2-96.2
=0