When dividing 490 by a number, the quotient is 5 and the remainder is 40. What is the number?
490除以一个数，商是5，余数是40，这个数是多少．
<gadget id="calculator">490 - 40</gadget>
<output>450</output>

<gadget id="calculator">450 / 5</gadget>
<output>90</output>

<result>90</result>