The product of two numbers is 3.936, one factor is enlarged by 100 times, and the other factor is reduced by 10 times, what is the product?
两个数相乘积是3.936，一个因数扩大100倍，另一个因数缩小10倍，积多少．
<gadget id="calculator">100 / 10</gadget>
<output>10</output>

<gadget id="calculator">3.936 * 10</gadget>
<output>39.36</output>

<result>39.36</result>