The product of the sum and the difference of two numbers is 28, the large number is 8, what is the decimal.
大小两数的和与差的乘积是28，大数是8，小数是多少．
<gadget id="calculator">14 * 1</gadget>
<output>14</output>

<gadget id="calculator">14 - 8</gadget>
<output>6</output>

<result>6</result>