It is known that a is a natural number, A and B are numbers from 1 to 9 respectively, if the simplest fraction ((a)/222)=0.3{_{A}**(.)}3{_{B }**(.)}, then what is a.
已知a是一个自然数，A、B分别是1至9中的某个数字，如果最简分数((a)/222)=0.3{_{A}**(．)}3{_{B}**(．)}，那么a是多少．
<result>83</result>