There are two positive integers a, b, known [a, b] = 280, (a, b) = 14, if a = 70, then b = how much.
有两个正整数a、b，已知【a，b】=280，(a，b)=14，若a=70，则b=多少．
<gadget id="calculator">280 / 70</gadget>
<output>4</output>

<gadget id="calculator">4 * 14</gadget>
<output>56</output>

<result>56</result>