When a number is divided by 8, the quotient is 56 and the remainder is 7. What is the number?
一个数除以8，商是56，余数是7，这个数是多少．
<gadget id="calculator">56 * 8</gadget>
<output>448</output>

<gadget id="calculator">448 + 7</gadget>
<output>455</output>

<result>455</result>