For a two-digit number, the sum of the ones digit and the tens digit is 10. If the ones digit and the tens digit of these two numbers are reversed, the new two digits are 18 greater than the original number. Find the original two digits number of digits.
一个两位数，个位数字与十位数字之和为10，如果把这两个数字的个位数字与十位数字对调，得到新的两位数比原来的数大18，求原来的两位数．
<gadget id="calculator">64 - 46</gadget>
<output>18</output>

<result>18</result>