Among fractions (1/20), 1(3/8), (12/15), (1/14), how many fractions cannot be reduced to finite decimals.
在分数(1/20)，1(3/8)，(12/15)，(1/14)中，不能化为有限小数的是多少．
<gadget id="calculator">1 / 14</gadget>
<output>1/14 = around 0.071429</output>

<result>1/14 = around 0.071429</result>