For leather shoes produced by a shoe factory, the ratio of the double number produced in October to the double number produced in September is 5:4. 2000 pairs were produced in September, how many pairs were produced in October?
鞋厂生产的皮鞋，十月份生产双数与九月份生产双数的比是5：4．九月份生产了2000双，十月份生产了多少双？
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">2_000 * (5/4)</gadget>
<output>2_500</output>

<result>2_500</result>