Uncle Zhang raised 350 geese, and the number of geese was as many as that of ducks (2/5). How many ducks do you have?
张大爷养了350只鹅，鹅的只数是鸭的(2/5)．养了多少只鸭？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">350 / (2/5)</gadget>
<output>875</output>

<result>875</result>