0.00...045(10个0)÷0.09(10个0)= 0.00...076(2010个0)÷0.00...04(2011个0)=
问题描述:
0.00...045(10个0)÷0.09(10个0)= 0.00...076(2010个0)÷0.00...04(2011个0)=
答
0.5
19