The average number of the dividend, divisor, and quotient is 13, and the divisor is the largest single digit. What is the dividend.
被除数、除数、商的平均数是13，除数是最大的一位数，被除数是多少．
<gadget id="calculator">13 * 3</gadget>
<output>39</output>

<gadget id="calculator">39 - 9</gadget>
<output>30</output>

<gadget id="calculator">9 + 1</gadget>
<output>10</output>

<gadget id="calculator">30 / 10</gadget>
<output>3</output>

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

<result>27</result>