The greatest common factor of two numbers A and B is 5, and the least common multiple is 280. If A is 40, what is B equal to?
甲、乙两个数的最大公因数是5，最小公倍数是280，如果甲等于40，乙等于多少．
<gadget id="calculator">280 / 40</gadget>
<output>7</output>

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

<result>35</result>