其它
The sum of the repeating decimals~$0.\overline{163}$~and~$0.\overline{614}$~is ． 
Overseas Competition->Knowledge Point->Calculation Modules->Decimals->Recurring Decimals
$0.163163163\cdots+0.614614614\cdots=0.777777777\cdots=\dfrac{7}{9}$ 