The greatest common divisor of two numbers is 6, and the least common multiple is 90. If one number is 18, what is the other number?
两个数的最大公约数是6，最小公倍数是90，已知一个数是18，另一个数是多少．
<gadget id="calculator">90 / 18</gadget>
<output>5</output>

<gadget id="calculator">5 * 6</gadget>
<output>30</output>

<result>30</result>