There are 200 red pens bought by the school, black pens are red pens (4/5), and blue pens (5/8), how many blue pens are there?
学校买来红笔有200支，黑笔是红笔的(4/5)，又是蓝笔的(5/8)，蓝笔有多少支？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">(4/5) / (5/8)</gadget>
<output>32/25 = around 1.28</output>

<gadget id="calculator">200 * (32/25)</gadget>
<output>256</output>

<result>256</result>