Xiaoli is doing a subtraction problem, and she regards the 7 in the tens place to be subtracted as 9, and the 3 in the ones place as 8, and the calculated difference is 76. What is the correct difference.
小丽在做一道减法题，把被减数十位上的7看作了9，个位上的3看作了8，算得的差是76．正确的差是多少．
<gadget id="calculator">8 - 3</gadget>
<output>5</output>

<gadget id="calculator">90 - 70</gadget>
<output>20</output>

<gadget id="calculator">76 - 5 - 20</gadget>
<output>51</output>

<result>51</result>