With all the money Mr. Liu brought, he could buy 200 notebooks and 300 pens if he bought all the pens. Later, Mr. Liu decided to buy a pen and a notebook for each student. How many students can he buy now? ?
刘老师所带的钱全部买笔记本可买200本，全部买钢笔可买300支钢笔，后来刘老师决定，给每个学生买一支钢笔和一本笔记本，问现在可以买给多少个学生呢？
<gadget id="calculator">1 / 200</gadget>
<output>1/200 = around 0.005</output>

<gadget id="calculator">1 / 300</gadget>
<output>1/300 = around 0.003333</output>

<gadget id="calculator">(1/200) + (1/300)</gadget>
<output>1/120 = around 0.008333</output>

<gadget id="calculator">1 / (1/120)</gadget>
<output>120</output>

<result>120</result>