When a number is divided by 16, the quotient is 30 and the remainder is 1. What is the number?
一个数除以16，商是30，余数是1，这个数是多少．
<gadget id="calculator">30 * 16</gadget>
<output>480</output>

<gadget id="calculator">480 + 1</gadget>
<output>481</output>

<result>481</result>