When the little sloppy was calculating the division, he miswrote the divisor 12 as 21. The resulting quotient was 17 and the remainder was 3. What should be the correct quotient?
小马虎在计算除法时，把除数12错写成21，结果商是17，余数是3，正确的商应该是多少．
<gadget id="calculator">21 * 17</gadget>
<output>357</output>

<gadget id="calculator">357 + 3</gadget>
<output>360</output>

<gadget id="calculator">360 / 12</gadget>
<output>30</output>

<result>30</result>