When Xiaobin calculated an addition formula, he regarded 9 in the tenth place of one addend as 3, and 1 in the percentile of another addend as 7. The result was 2.46, and the correct result should be How many.
小斌在计算一道加法算式时，将一个加数十分位的9看成了3，把另一个加数的百分位的1看成了7，等到的结果是2.46，正确的结果应该是多少．
<gadget id="calculator">0.07 - 0.01</gadget>
<output>0.06</output>

<gadget id="calculator">2.46 - 0.06</gadget>
<output>2.4</output>

<gadget id="calculator">0.9 - 0.3</gadget>
<output>0.6</output>

<gadget id="calculator">2.4 + 0.6</gadget>
<output>3</output>

<result>3</result>