The greatest common divisor of 36 and the number A is 12, and the least common multiple is 144. What is the number A?
36和数A的最大公约数是12，最小公倍数是144．数A是多少．
<gadget id="calculator">144 / 36</gadget>
<output>4</output>

<gadget id="calculator">4 * 12</gadget>
<output>48</output>

<result>48</result>