When a number is divided by 24, the quotient and remainder are both 19. What is the number?
一个数除以24，商和余数都是19，这个数是多少．
<gadget id="calculator">24 * 19</gadget>
<output>456</output>

<gadget id="calculator">456 + 19</gadget>
<output>475</output>

<result>475</result>