In a division formula, the quotient and remainder are both 3, and the divisor is exactly 3 times the remainder. What is the dividend.
一个除法算式中，商和余数都是3，除数正好是余数的3倍．被除数是多少．
<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">3 * 9</gadget>
<output>27</output>

<gadget id="calculator">27 + 3</gadget>
<output>30</output>

<result>30</result>