Xiao Ming called his aunt's house, but forgot one of the numbers. He only remembered that it was 866*4586. He dialed at will. What is the probability that he just dialed through?
小明给姑姑家打电话，忘记了其中的一个号码，只记得是866※4586，他随意拨打，恰好拨通的可能性是多少．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>