When a number is divided by 6, the quotient is 503 and the remainder is 4. What is this number?
一个数除以6，商是503，余数是4，这个数是多少？
<gadget id="calculator">503 * 6</gadget>
<output>3_018</output>

<gadget id="calculator">3_018 + 4</gadget>
<output>3_022</output>

<result>3_022</result>