The greatest common factor of two natural numbers is 14, and the least common multiple is 84. It is known that one of the numbers is 28, and what is the other number?
两个自然数的最大公因数是14，最小公倍数是84，已知其中一个数是28，另一个数是多少？
<gadget id="calculator">84 / 28</gadget>
<output>3</output>

<gadget id="calculator">14 * 3</gadget>
<output>42</output>

<result>42</result>