When Xiaojie calculated a subtraction test question, he regarded the subtrahend 7.3 as 73, and the result was 0.73. What is the correct calculation result?
小杰在计算一道减法试题时，把减数7.3看成了73，结果得0.73，正确的计算结果是多少．
<gadget id="calculator">0.73 - 7.3</gadget>
<output>-6.57</output>

<gadget id="calculator">73 + (-6.57)</gadget>
<output>66.43</output>

<result>66.43</result>