The divisor and quotient are both 29, and the remainder is 10, what is the dividend?
除数和商都是29，余数是10，则被除数是多少．
<gadget id="calculator">29 * 29</gadget>
<output>841</output>

<gadget id="calculator">841 + 10</gadget>
<output>851</output>

<result>851</result>