A mechanical processing factory produces 1000 pieces of a kind of parts in September, which is (1/4) more than the original plan. How many extra parts are produced?
一个机械加工厂，九月份生产一种零件1000个，比原计划多生产(1/4)．多生产多少个零件？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">1_000 / (5/4)</gadget>
<output>800</output>

<gadget id="calculator">1_000 - 800</gadget>
<output>200</output>

<result>200</result>