The divisor is 7, the quotient is 123, the remainder is 5, what is the dividend.
除数是7，商是123，余数是5，被除数是多少．
<gadget id="calculator">123 * 7</gadget>
<output>861</output>

<gadget id="calculator">861 + 5</gadget>
<output>866</output>

<result>866</result>