If the product of two natural numbers is 48, and 48 is exactly divisible by the sum of these two natural numbers, what is the quotient obtained?
有两个自然数的乘积是48，且48恰好能被这两个自然数的和整除，则所得的商是多少．
<gadget id="calculator">4 + 12</gadget>
<output>16</output>

<gadget id="calculator">48 / 16</gadget>
<output>3</output>

<result>3</result>