Add a 0 to the end of a two-digit number to make it a three-digit number. As a result, the three-digit number is 360 larger than the two-digit number. What is the original two-digit number?
在一个两位数的后面添上一个0，使它变成一个三位数，结果三位数比两位数增大了360，那么原来的两位数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">360 / 9</gadget>
<output>40</output>

<result>40</result>