Suppose a and b are two different numbers selected from the first 100 natural numbers, then what is the maximum possible value of ((a+b)/(ab)).
设a和b是选自前100个自然数中的两个不同的数，那么((a+b)/(a-b))的最大可能值是多少．
<gadget id="calculator">100 + 99</gadget>
<output>199</output>

<gadget id="calculator">100 - 99</gadget>
<output>1</output>

<gadget id="calculator">199 / 1</gadget>
<output>199</output>

<result>199</result>