Among fractions (9/15), (9/12), (9/25), (9/27), how many fractions cannot be converted into finite decimals.
在分数(9/15)，(9/12)，(9/25)，(9/27)中，不能化成有限小数的是多少．
<gadget id="calculator">9 / 27</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>