When Xiao Ming did the multiplication problem, he regarded one of the factors, 21, as 12. The resulting product was 1107 less than the correct product. What is the correct product?
小明做乘法计算题时，把其中一个因数21看成了12，结果得到的积比正确的积少了1107，正确的积是多少？
<gadget id="calculator">7 / 4</gadget>
<output>7/4 = around 1.75</output>

<gadget id="calculator">(7/4) - 1</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1_107 / (3/4)</gadget>
<output>1_476</output>

<gadget id="calculator">1_476 * (7/4)</gadget>
<output>2_583</output>

<result>2_583</result>