The greatest common divisor of two numbers is 7, the least common multiple is 245, one of them is 49, what is the other number.
两个数的最大公约数是7，最小公倍数是245，其中一个数是49，另一个数是多少．
<gadget id="calculator">245 / 49</gadget>
<output>5</output>

<gadget id="calculator">5 * 7</gadget>
<output>35</output>

<result>35</result>