The greatest common factor of two numbers is 7, and the least common multiple is 637. If one of these two numbers is 49, what is the other number?
两个数的最大公因数是7，最小公倍数是637，这两个数中的一个是49，则另一个数是多少．
<gadget id="calculator">637 / 49</gadget>
<output>13</output>

<gadget id="calculator">7 * 13</gadget>
<output>91</output>

<result>91</result>