The difference between two natural numbers is 5, and the difference between their least common multiple and greatest common divisor is 203. What is the sum of these two numbers?
两个自然数的差是5，它们的最小公倍数与最大公约数的差是203，则这两个数的和是多少．
<gadget id="calculator">12 + 17</gadget>
<output>29</output>

<result>29</result>