174﹣58= 269+32= 135+25= 105×3=0÷3+60= 4×70+95= 606÷6= 91×7=21×6+40=
(78.6﹣0.786×25十75%×21.4)÷15×1997 8888008×125 2001×3.14+200.1×31.4+20.01×314 0.525÷13.125÷4×85.2.
6.4×2.5+2×3.4+25%15.7×7.7+1.57×22+1.57 12.56﹣(+2.56+)×﹣× 2010×3.65÷〔0.1÷(2.1﹣2.09)〕
① ② ③ ④99×88+88×77+77×66+66×55.
(78.6﹣0.786×25十75%×21.4)÷15×1997.
324×11.25+65.8×112.58888008×125 0.525÷13125÷4×85.2