When Lele was doing two-digit calculation problems, he regarded the 1 in the 21st place of the second multiplier as 7, and the result was 66 more than the correct product. What should be the correct product?
乐乐在做两位数的计算题时，把第二个乘数21个位上的1看成了7，结果比正确的积多了66，正确的积应该是多少？
<gadget id="calculator">7 - 1</gadget>
<output>6</output>

<gadget id="calculator">66 / 6</gadget>
<output>11</output>

<gadget id="calculator">21 * 11</gadget>
<output>231</output>

<result>231</result>