When the little sloppy calculated the division, he regarded the divisor 12 as 21, and the result was that the quotient was 15 and the remainder was 9. What is the correct quotient.
小马虎在计算除法时，把除数12看成了21，结果得到商15还余9．请问正确的商是多少．
<gadget id="calculator">21 * 15</gadget>
<output>315</output>

<gadget id="calculator">315 + 9</gadget>
<output>324</output>

<gadget id="calculator">324 / 12</gadget>
<output>27</output>

<result>27</result>