When the little sloppy was doing a subtraction, he wrongly wrote 9 in the ones place of the subtrahend as 6, and wrongly wrote 6 in the tenths place of the subtrahend as 9. The final difference was 56.7. What is the correct answer to this question?
小马虎在做一道减法时，把被减数个位上的9错写成6，减数十分位上的6错写成9，最后所得的差是56.7，这道题的正确答案是多少？
<gadget id="calculator">9 - 6</gadget>
<output>3</output>

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

<gadget id="calculator">56.7 + 3 + 0.3</gadget>
<output>60</output>

<result>60</result>