The divisor is 890, the quotient is 830, and the remainder is 80. What is the dividend?
除数是890，商是830，余数是80，被除数是多少．
<gadget id="calculator">830 * 890</gadget>
<output>738_700</output>

<gadget id="calculator">738_700 + 80</gadget>
<output>738_780</output>

<result>738_780</result>