A division formula with a remainder, the quotient is 9, the remainder can only be 1, what is the dividend?
一个有余数的除法算式，商是9，余数只能是1，被除数是多少？
<gadget id="calculator">9 * 2</gadget>
<output>18</output>

<gadget id="calculator">18 + 1</gadget>
<output>19</output>

<result>19</result>