There is a two-digit number, and after adding a 0 at the end of it, a new number is obtained. The sum of it and the original two digits is 110. What is the difference between the new number and the original two-digit number?
有一个两位数，在它的末尾添上一个0后，得到一个新数．它与原两位数的和是110．求新数与原来两位数的差是多少？
<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<gadget id="calculator">110 / 11</gadget>
<output>10</output>

<gadget id="calculator">10 * 10</gadget>
<output>100</output>

<gadget id="calculator">100 - 10</gadget>
<output>90</output>

<result>90</result>