When Xiaojun was doing the question, due to his carelessness, he wrote the 3 in the ones place of the subtrahend as 5, and the 9 in the tens place as 6. The difference is 157. What is the correct difference?
小军做题时，由于粗心大意把被减数个位上的3写成了5，把十位上的9写成了6，这样算的差是157，正确的差是多少．
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">157 - 2</gadget>
<output>155</output>

<gadget id="calculator">90 - 60</gadget>
<output>30</output>

<gadget id="calculator">155 + 30</gadget>
<output>185</output>

<result>185</result>