When the little sloppy calculates two-digit subtraction, the 3 in the subtrahend's place is regarded as 2, and the 6 in the tens place is regarded as 5. The resulting difference is 26, what should be the correct difference?
小马虎在计算两位数减法时，把减数个位上的3看作了2，十位上的6看作了5．得到的差是26，正确的差应该是多少？
<gadget id="calculator">60 - 50</gadget>
<output>10</output>

<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<gadget id="calculator">26 - 11</gadget>
<output>15</output>

<result>15</result>