Xiaoqiang regarded the 6 in the unit digit of the second factor of 36 as 9 when calculating, and the result was 54 more than the correct product. What should be the correct result?
小强在计算时把第二个因数36的个位上的6看成了9，结果比正确的积多了54，正确的结果应该是多少．
<gadget id="calculator">54 / 3</gadget>
<output>18</output>

<gadget id="calculator">18 * 36</gadget>
<output>648</output>

<result>648</result>