The water pump factory produced 1,600 water pumps last year, which is 200 less than this year's (4/5). How many water pumps will it produce this year?
水泵厂去年产水泵1600台，比今年的产量的(4/5)少200台，今年生产水泵多少台？
<gadget id="calculator">1_600 + 200</gadget>
<output>1_800</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1_800 / (4/5)</gadget>
<output>2_250</output>

<result>2_250</result>