The divisor is 9, the quotient is 21, the remainder is 8, what is the dividend.
除数是9，商是21，余数是8，被除数是多少．
<gadget id="calculator">21 * 9</gadget>
<output>189</output>

<gadget id="calculator">189 + 8</gadget>
<output>197</output>

<result>197</result>