When Xiaohong subtracted a decimal from 14.56, she mistakenly aligned the last digit of the decimal, and the result was 13.39. What should be the correct result?
小红在计算14.56减去一个小数时，错把小数末位对齐了，得到结果是13.39，正确的结果应该是多少．
<gadget id="calculator">14.56 - 13.39</gadget>
<output>1.17</output>

<gadget id="calculator">1.17 * 10</gadget>
<output>11.7</output>

<gadget id="calculator">14.56 - 11.7</gadget>
<output>2.86</output>

<result>2.86</result>