When Xiao Ming did the subtraction problem, he wrote 5 for the 3 in the ones place of the subtrahend, and 7 for the 1 in the tens place. The result of this calculation is 201. What should be the correct difference?
小明做减法题时，把被减数个位上的3错写成5，把十位上的1错写成7，这样算得的结果是201．正确的差应该是多少？
<gadget id="calculator">75 - 13</gadget>
<output>62</output>

<gadget id="calculator">201 - 62</gadget>
<output>139</output>

<result>139</result>