The greatest common factor of two natural numbers is 18, and the least common multiple is 108. Given that one of the natural numbers is 54, what is the other natural number?
两个自然数的最大公因数是18，最小公倍数是108．已知其中一个自然数是54，则另一个自然数是多少．
<gadget id="calculator">18 * 2</gadget>
<output>36</output>

<result>36</result>