When a number is divided by 207, the quotient is 17 and the remainder is 3. What is this number?
一个数除207时，商是17，余数是3，这个数是多少？
<gadget id="calculator">207 - 3</gadget>
<output>204</output>

<gadget id="calculator">204 / 17</gadget>
<output>12</output>

<result>12</result>