When a number is divided by 8, the quotient is 102 and the remainder is 7. What is the number?
一个数除以8，商是102，余数是7，这个数是多少．
<gadget id="calculator">102 * 8</gadget>
<output>816</output>

<gadget id="calculator">816 + 7</gadget>
<output>823</output>

<result>823</result>