When Xiaoyun calculated 2.34 plus one decimal place, he mistakenly aligned the end of the number and the result was 2.9. What should be the correct result?
小云在计算2.34加一个一位小数时，由于错误地把数的末尾对齐，结果是2.9，正确的结果应该是多少．
<gadget id="calculator">2.9 - 2.34</gadget>
<output>0.56</output>

<gadget id="calculator">0.56 * 10</gadget>
<output>5.6</output>

<gadget id="calculator">2.34 + 5.6</gadget>
<output>7.94</output>

<result>7.94</result>