When a number is divided by 48, the quotient is 19 and the remainder is 11. What is the number?
一个数除以48，商是19，余数是11，这个数是多少．
<gadget id="calculator">48 * 19</gadget>
<output>912</output>

<gadget id="calculator">912 + 11</gadget>
<output>923</output>

<result>923</result>