The greatest common factor of two numbers A and B is 24, and the least common multiple is 72. The number of A is 24. What is the number of B?
甲、乙两数的最大公因数是24，最小公倍数是72，甲数是24，乙数是多少．
<gadget id="calculator">72 / 24</gadget>
<output>3</output>

<gadget id="calculator">24 * 3</gadget>
<output>72</output>

<result>72</result>