After a number is divided by 9, there is a remainder, the quotient is 1, what is the smallest number.
一个数除以9后，有余数，商是1，这个数是最小是多少．
<gadget id="calculator">1 * 9</gadget>
<output>9</output>

<gadget id="calculator">9 + 1</gadget>
<output>10</output>

<result>10</result>