When a number is divided by 6, the quotient is 123 and the remainder is 3. What is the number?
一个数除以6，商是123，余数是3，这个数是多少．
<gadget id="calculator">123 * 6</gadget>
<output>738</output>

<gadget id="calculator">738 + 3</gadget>
<output>741</output>

<result>741</result>