In a division formula, the divisor is 9. Lingling reversed the tens digit and the ones digit of the dividend, and the resulting quotient is the same as the divisor. What should be the correct quotient?
一道除法算式，除数是9，玲玲把被除数的十位数字和个位数字看颠倒了，结果除得的商与除数相同，正确的商应该是多少．
<gadget id="calculator">18 / 9</gadget>
<output>2</output>

<result>2</result>