In a division formula, the quotient and the remainder are both 3, and the divisor is exactly 9 times the remainder. What is the dividend.
一道除法算式中，商和余数都是3，除数正好是余数的9倍．被除数是多少．
<gadget id="calculator">3 * 9</gadget>
<output>27</output>

<gadget id="calculator">27 * 3</gadget>
<output>81</output>

<gadget id="calculator">81 + 3</gadget>
<output>84</output>

<result>84</result>