If the greatest common divisor of two natural numbers is 6 and its least common multiple is 42, what is the sum of these two natural numbers?
如果两个自然数的最大公约数为6，它的最小公倍数为42，那么这两个自然数的和为多少？
<gadget id="calculator">42 / 6</gadget>
<output>7</output>

<gadget id="calculator">1 * 6 * 7</gadget>
<output>42</output>

<gadget id="calculator">1 * 6</gadget>
<output>6</output>

<gadget id="calculator">42 + 6</gadget>
<output>48</output>

<result>48</result>