When Xiao Ming was doing a subtraction problem, he regarded the 1 in the subtrahend as 7, and the 7 in the tens as 1. The result was a difference of 160. What is the correct number?
小明在做一道减法题时，把减数个位上的1看作7，把十位上的7看作1，结果算出来差是160，正确的得数是多少．
<gadget id="calculator">17 - 71</gadget>
<output>-54</output>

<gadget id="calculator">160 + (-54)</gadget>
<output>106</output>

<result>106</result>