When a number is divided by 4, the quotient is 205 and the remainder is 3. What is this number?
一个数除以4，商是205，余数是3，这个数是多少？
<gadget id="calculator">205 * 4</gadget>
<output>820</output>

<gadget id="calculator">820 + 3</gadget>
<output>823</output>

<result>823</result>